Added support to libconfig for key names containing '.' or beginnig with digits.

- Note: Since '.' (period) is a valid character for key names, it is no
  longer a valid path separator for lookups. Please use '/' (forward
  slash) or ':' (semicolon) instead.

Signed-off-by: Haru <haru@dotalux.com>

5 files changed, 142 insertions, 121 deletions

diff --git a/3rdparty/libconfig/extra/gen/scanner.l b/3rdparty/libconfig/extra/gen/scanner.l
index bf527e596..7c71f047e 100644
--- a/3rdparty/libconfig/extra/gen/scanner.l
+++ b/3rdparty/libconfig/extra/gen/scanner.l
@@ -97,7 +97,7 @@ static int fromihex(const char *s) {
 
 true              [Tt][Rr][Uu][Ee]
 false             [Ff][Aa][Ll][Ss][Ee]
-name              [A-Za-z\*][-A-Za-z0-9_\*']*
+name              [A-Za-z0-9\*][-A-Za-z0-9_\*'.]*
 integer           [-+]?[0-9]+
 integer64         [-+]?[0-9]+L(L)?
 hex               0[Xx][0-9A-Fa-f]+
@@ -181,12 +181,12 @@ include_open      ^[ \t]*@include[ \t]+\"
 \}                { return(TOK_GROUP_END); }
 {true}            { yylval->ival = 1; return(TOK_BOOLEAN); }
 {false}           { yylval->ival = 0; return(TOK_BOOLEAN); }
-{name}            { yylval->sval = yytext; return(TOK_NAME); }
 {float}           { yylval->fval = atof(yytext); return(TOK_FLOAT); }
 {integer}         { yylval->ival = atoi(yytext); return(TOK_INTEGER); }
 {integer64}       { yylval->llval = atoll(yytext); return(TOK_INTEGER64); }
 {hex}             { yylval->ival = fromihex(yytext); return(TOK_HEX); }
 {hex64}           { yylval->llval = fromhex(yytext); return(TOK_HEX64); }
+{name}            { yylval->sval = yytext; return(TOK_NAME); }
 \[                { return(TOK_ARRAY_START); }
 \]                { return(TOK_ARRAY_END); }
 \(                { return(TOK_LIST_START); }
diff --git a/3rdparty/libconfig/grammar.c b/3rdparty/libconfig/grammar.c
index 55216535b..26444f816 100644
--- a/3rdparty/libconfig/grammar.c
+++ b/3rdparty/libconfig/grammar.c
@@ -1261,7 +1261,7 @@ YYSTYPE yylval;
        `yyss': related to states.
        `yyvs': related to semantic values.
 
-       Refer to the stacks through separate pointers, to allow yy overflow
+       Refer to the stacks thru separate pointers, to allow yyoverflow
        to reallocate them elsewhere.  */
 
     /* The state stack.  */
diff --git a/3rdparty/libconfig/libconfig.c b/3rdparty/libconfig/libconfig.c
index 358c415f5..8f2b3fb42 100644
--- a/3rdparty/libconfig/libconfig.c
+++ b/3rdparty/libconfig/libconfig.c
@@ -40,7 +40,7 @@
 #include <string.h>
 #include <ctype.h>
 
-#define PATH_TOKENS ":./"
+#define PATH_TOKENS ":/"
 #define CHUNK_SIZE 16
 #define FLOAT_PRECISION 10
 
@@ -537,12 +537,13 @@ static int __config_validate_name(const char *name)
   if(*p == '\0')
     return(CONFIG_FALSE);
 
-  if(! isalpha((int)*p) && (*p != '*'))
+  if(! isalpha((int)*p) && !isdigit((int)*p) && (*p != '*')) {
     return(CONFIG_FALSE);
+  }
 
   for(++p; *p; ++p)
   {
-    if(! (isalpha((int)*p) || isdigit((int)*p) || strchr("*_-'", (int)*p)))
+    if(! (isalpha((int)*p) || isdigit((int)*p) || strchr("*_-'.", (int)*p)))
       return(CONFIG_FALSE);
   }
 
diff --git a/3rdparty/libconfig/scanner.c b/3rdparty/libconfig/scanner.c
index 44a7d69dd..96c01fc5f 100644
--- a/3rdparty/libconfig/scanner.c
+++ b/3rdparty/libconfig/scanner.c
@@ -13,7 +13,7 @@
 #define FLEX_SCANNER
 #define YY_FLEX_MAJOR_VERSION 2
 #define YY_FLEX_MINOR_VERSION 5
-#define YY_FLEX_SUBMINOR_VERSION 37
+#define YY_FLEX_SUBMINOR_VERSION 39
 #if YY_FLEX_SUBMINOR_VERSION > 0
 #define FLEX_BETA
 #endif
@@ -198,6 +198,13 @@ typedef size_t yy_size_t;
                     if ( yytext[yyl] == '\n' )\
                         --yylineno;\
             }while(0)
+    #define YY_LINENO_REWIND_TO(dst) \
+            do {\
+                const char *p;\
+                for ( p = yy_cp-1; p >= (dst); --p)\
+                    if ( *p == '\n' )\
+                        --yylineno;\
+            }while(0)
     
 /* Return all but the first "n" matched characters back to the input stream. */
 #define yyless(n) \
@@ -374,21 +381,22 @@ struct yy_trans_info
 	flex_int32_t yy_verify;
 	flex_int32_t yy_nxt;
 	};
-static yyconst flex_int16_t yy_accept[112] =
+static yyconst flex_int16_t yy_accept[123] =
     {   0,
         0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-       46,   44,   25,   24,   24,    5,   44,   40,   41,   32,
-       44,   27,   33,   44,   34,   34,   26,   42,   44,   32,
-       32,   38,   39,   28,   29,   25,   44,    3,    4,    3,
+       46,   44,   25,   24,   24,    5,   44,   40,   41,   37,
+       44,   27,   32,   44,   33,   33,   26,   42,   44,   37,
+       37,   38,   39,   28,   29,   25,   44,    3,    4,    3,
         6,   15,   14,   20,   23,   45,   17,   45,   25,    0,
-       43,   32,   33,   34,   33,    0,    1,    0,   33,    0,
-       35,    0,   16,   32,   32,   25,    0,    0,    2,    6,
-       12,    0,   11,   10,    7,    8,    9,   20,   22,   21,
-       17,    0,   18,    0,   33,   33,    0,    0,   33,   35,
-       36,   32,   32,    0,    0,    0,   33,   37,   32,   30,
-
-        0,   13,   37,   31,    0,    0,    0,    0,    0,   19,
-        0
+       43,   37,   32,   33,   32,    0,    1,    0,   32,   33,
+       37,   34,   37,   16,   37,   37,   25,    0,    0,    2,
+        6,   12,    0,   11,   10,    7,    8,    9,   20,   22,
+       21,   17,    0,   18,   32,    0,   34,    0,   32,   32,
+       37,    0,   37,   32,   34,   35,   37,   37,    0,    0,
+
+       32,    0,   32,   34,    0,   37,   32,   36,   37,   30,
+        0,   13,   32,   36,   31,    0,    0,    0,    0,    0,
+       19,    0
     } ;
 
 static yyconst flex_int32_t yy_ec[256] =
@@ -426,49 +434,51 @@ static yyconst flex_int32_t yy_ec[256] =
 static yyconst flex_int32_t yy_meta[51] =
     {   0,
         1,    1,    1,    1,    1,    2,    1,    3,    1,    1,
-        3,    1,    1,    3,    1,    1,    4,    4,    1,    1,
+        3,    1,    1,    3,    3,    1,    4,    4,    1,    1,
         1,    1,    1,    1,    4,    4,    4,    4,    3,    3,
         3,    3,    3,    3,    3,    1,    2,    1,    4,    4,
         4,    4,    3,    3,    3,    3,    3,    3,    1,    1
     } ;
 
-static yyconst flex_int16_t yy_base[124] =
+static yyconst flex_int16_t yy_base[134] =
     {   0,
-        0,   49,   49,   50,   48,   49,   50,   51,  214,  213,
-      218,  221,  215,  221,  221,  221,  213,  221,  221,    0,
-       47,  221,   41,   55,   62,   66,  221,  221,  209,  189,
-       32,  221,  221,  221,  221,   67,  170,  221,  221,  196,
-        0,  221,   64,    0,  221,   61,  205,  187,  207,  205,
-      221,    0,   77,   97,   99,  111,  221,  204,  103,  119,
-      170,    0,  221,   46,   71,   98,  153,  126,  221,    0,
-      221,    0,  221,  221,  221,  221,  221,    0,  221,  221,
-      164,  146,  221,   57,  117,  124,  131,  129,  135,  221,
-      138,  135,  123,  127,    0,  137,  139,  132,  131,    0,
-
-      117,  221,  221,    0,  112,   99,   91,  111,  157,  221,
-      221,  172,  176,  180,  184,  188,  190,  194,  198,  202,
-      104,   98,   68
+        0,   49,   49,   50,   48,   49,   50,   51,  244,  243,
+      248,  251,  245,  251,  251,  251,  243,  251,  251,    0,
+       47,  251,   41,   55,   62,  210,  251,  251,  238,  218,
+       32,  251,  251,  251,  251,   67,  199,  251,  251,  225,
+        0,  251,   64,    0,  251,   61,  234,  216,  236,  234,
+      251,    0,   66,   87,   95,  106,  251,  233,   98,  200,
+      115,  204,  123,  251,   46,   47,   70,  190,  187,  251,
+        0,  251,    0,  251,  251,  251,  251,  251,    0,  251,
+      251,  219,  198,  251,  117,  142,  166,   57,  113,  120,
+      154,  125,  128,  135,    0,  165,  162,  128,  154,    0,
+
+      156,  163,  161,  251,  167,  169,  171,  152,  149,    0,
+      126,  251,  174,    0,    0,  119,  117,   85,  119,   94,
+      251,  251,  197,  201,  205,  209,  213,  215,  219,  223,
+      227,  115,  104
     } ;
 
-static yyconst flex_int16_t yy_def[124] =
+static yyconst flex_int16_t yy_def[134] =
     {   0,
-      111,    1,  112,  112,  113,  113,  114,  114,  115,  115,
-      111,  111,  111,  111,  111,  111,  116,  111,  111,  117,
-      111,  111,  111,  111,  111,  111,  111,  111,  111,  117,
-      117,  111,  111,  111,  111,  111,  111,  111,  111,  111,
-      118,  111,  111,  119,  111,  111,  120,  120,  111,  116,
-      111,  117,  111,  111,  111,  111,  111,  116,  111,  111,
-      111,  121,  111,  117,  117,  111,  111,  111,  111,  118,
-      111,  122,  111,  111,  111,  111,  111,  119,  111,  111,
-      120,  120,  111,  111,  111,  111,  111,  111,  111,  111,
-      121,  117,  117,  111,  123,  111,  111,  111,  117,  117,
-
-      111,  111,  111,  117,  111,  111,  111,  111,  111,  111,
-        0,  111,  111,  111,  111,  111,  111,  111,  111,  111,
-      111,  111,  111
+      122,    1,  123,  123,  124,  124,  125,  125,  126,  126,
+      122,  122,  122,  122,  122,  122,  127,  122,  122,  128,
+      122,  122,  122,  122,  128,   25,  122,  122,  122,  128,
+      128,  122,  122,  122,  122,  122,  122,  122,  122,  122,
+      129,  122,  122,  130,  122,  122,  131,  131,  122,  127,
+      122,  128,  122,  122,  122,  122,  122,  127,  128,   25,
+      128,  128,  128,  122,  128,  128,  122,  122,  122,  122,
+      129,  122,  132,  122,  122,  122,  122,  122,  130,  122,
+      122,  131,  131,  122,  122,  122,  122,  122,  122,  128,
+      128,  122,  128,  128,  128,   63,  128,  128,  122,  133,
+
+      122,  122,  122,  122,  122,  128,  128,  128,  128,  128,
+      122,  122,  122,  128,  128,  122,  122,  122,  122,  122,
+      122,    0,  122,  122,  122,  122,  122,  122,  122,  122,
+      122,  122,  122
     } ;
 
-static yyconst flex_int16_t yy_nxt[272] =
+static yyconst flex_int16_t yy_nxt[302] =
     {   0,
        12,   13,   14,   15,   15,   16,   17,   12,   18,   19,
        20,   21,   22,   21,   23,   24,   25,   26,   27,   28,
@@ -476,33 +486,37 @@ static yyconst flex_int16_t yy_nxt[272] =
        20,   20,   31,   20,   20,   32,   12,   33,   20,   20,
        20,   30,   20,   20,   20,   20,   31,   20,   34,   35,
        36,   39,   39,   42,   42,   45,   45,   55,   55,   40,
-       40,   53,   65,   54,   54,   57,   79,   56,   66,   71,
-       58,  102,   37,   85,   85,   92,   59,   65,   54,   54,
-       59,   56,   54,   54,   43,   43,   46,   46,   60,   92,
-       67,   61,   60,   55,   55,   61,   62,   80,   72,   66,
-
-       73,   95,   60,   56,   93,   74,   60,   91,   75,   76,
-       77,   59,  109,   54,   54,   55,   55,   56,   93,   86,
-       86,   67,   84,   60,   84,   56,   61,   85,   85,   87,
-       88,  108,   88,   85,   85,   89,   89,   60,  107,   56,
-       86,   86,   96,   87,   96,   89,   89,   97,   97,  100,
-       87,   89,   89,   97,   97,   97,   97,  104,  109,  106,
-      105,  103,  110,  100,   87,  101,   99,   98,  111,   82,
-       94,  104,   38,   38,   38,   38,   41,   41,   41,   41,
-       44,   44,   44,   44,   47,   47,   47,   47,   50,   50,
-       50,   50,   52,   52,   70,   68,   70,   70,   78,   90,
-
-       78,   78,   81,   81,   81,   81,   51,   51,   49,   83,
-       82,   69,   68,   64,   63,   51,   49,  111,   48,   48,
-       11,  111,  111,  111,  111,  111,  111,  111,  111,  111,
-      111,  111,  111,  111,  111,  111,  111,  111,  111,  111,
-      111,  111,  111,  111,  111,  111,  111,  111,  111,  111,
-      111,  111,  111,  111,  111,  111,  111,  111,  111,  111,
-      111,  111,  111,  111,  111,  111,  111,  111,  111,  111,
-      111
+       40,   53,   66,   54,   54,   57,   80,   56,   67,   72,
+       58,   67,   37,   89,   89,   97,   59,   66,   60,   60,
+       98,   56,   55,   55,   43,   43,   46,   46,   61,   97,
+       68,   62,   56,   68,   98,  120,   63,   81,   73,  121,
+
+       74,   85,   61,   54,   54,   75,   56,  112,   76,   77,
+       78,   55,   55,   86,   90,   90,   87,   88,  100,   88,
+      120,   56,   89,   89,   91,  119,   92,   86,   93,   89,
+       89,   94,   94,  101,  101,   56,   90,   90,   91,   96,
+       96,  103,  103,  102,   94,   94,   91,   96,   96,   96,
+       96,   94,   94,   92,  110,   92,  118,  102,  103,  103,
+       91,   96,   96,   96,   96,  105,  117,  106,  110,  116,
+      107,  107,  101,  101,  105,  115,  105,  103,  103,  113,
+      113,  114,  102,  113,  113,  107,  107,  107,  107,  115,
+      113,  113,  111,  109,  108,  104,  102,   38,   38,   38,
+
+       38,   41,   41,   41,   41,   44,   44,   44,   44,   47,
+       47,   47,   47,   50,   50,   50,   50,   52,   52,   71,
+      122,   71,   71,   79,   83,   79,   79,   82,   82,   82,
+       82,   99,   69,   95,   52,   51,   51,   49,   84,   83,
+       70,   69,   65,   64,   52,   51,   49,  122,   48,   48,
+       11,  122,  122,  122,  122,  122,  122,  122,  122,  122,
+      122,  122,  122,  122,  122,  122,  122,  122,  122,  122,
+      122,  122,  122,  122,  122,  122,  122,  122,  122,  122,
+      122,  122,  122,  122,  122,  122,  122,  122,  122,  122,
+      122,  122,  122,  122,  122,  122,  122,  122,  122,  122,
+
+      122
     } ;
 
-static yyconst flex_int16_t yy_chk[272] =
+static yyconst flex_int16_t yy_chk[302] =
     {   0,
         1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
         1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
@@ -511,29 +525,33 @@ static yyconst flex_int16_t yy_chk[272] =
         1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
         2,    3,    4,    5,    6,    7,    8,   23,   23,    3,
         4,   21,   31,   21,   21,   24,   46,   23,   36,   43,
-       24,  123,    2,   84,   84,   64,   25,   31,   25,   25,
-       26,   23,   26,   26,    5,    6,    7,    8,   25,   64,
-       36,   25,   26,   53,   53,   26,   25,   46,   43,   66,
-
-       43,  122,   25,   53,   65,   43,   26,  121,   43,   43,
-       43,   54,  108,   54,   54,   55,   55,   53,   65,   59,
-       59,   66,   56,   54,   56,   55,   54,   56,   56,   59,
-       60,  107,   60,   85,   85,   60,   60,   54,  106,   55,
-       86,   86,   87,   59,   87,   88,   88,   87,   87,   93,
-       86,   89,   89,   96,   96,   97,   97,   99,  109,  105,
-      101,   98,  109,   93,   86,   94,   92,   91,   82,   81,
-       68,   99,  112,  112,  112,  112,  113,  113,  113,  113,
-      114,  114,  114,  114,  115,  115,  115,  115,  116,  116,
-      116,  116,  117,  117,  118,   67,  118,  118,  119,   61,
-
-      119,  119,  120,  120,  120,  120,   58,   50,   49,   48,
-       47,   40,   37,   30,   29,   17,   13,   11,   10,    9,
-      111,  111,  111,  111,  111,  111,  111,  111,  111,  111,
-      111,  111,  111,  111,  111,  111,  111,  111,  111,  111,
-      111,  111,  111,  111,  111,  111,  111,  111,  111,  111,
-      111,  111,  111,  111,  111,  111,  111,  111,  111,  111,
-      111,  111,  111,  111,  111,  111,  111,  111,  111,  111,
-      111
+       24,   67,    2,   88,   88,   65,   25,   31,   25,   25,
+       66,   23,   53,   53,    5,    6,    7,    8,   25,   65,
+       36,   25,   53,   67,   66,  120,   25,   46,   43,  120,
+
+       43,   54,   25,   54,   54,   43,   53,  133,   43,   43,
+       43,   55,   55,   54,   59,   59,   54,   56,  132,   56,
+      119,   55,   56,   56,   59,  118,   61,   54,   61,   89,
+       89,   61,   61,   85,   85,   55,   90,   90,   59,   63,
+       63,   92,   92,   85,   93,   93,   90,   63,   63,   63,
+       63,   94,   94,   86,   98,   86,  117,   85,   86,   86,
+       90,   63,   63,   63,   63,   91,  116,   91,   98,  111,
+       91,   91,  101,  101,  102,  109,  102,  103,  103,  102,
+      102,  108,  101,  105,  105,  106,  106,  107,  107,  109,
+      113,  113,   99,   97,   96,   87,  101,  123,  123,  123,
+
+      123,  124,  124,  124,  124,  125,  125,  125,  125,  126,
+      126,  126,  126,  127,  127,  127,  127,  128,  128,  129,
+       83,  129,  129,  130,   82,  130,  130,  131,  131,  131,
+      131,   69,   68,   62,   60,   58,   50,   49,   48,   47,
+       40,   37,   30,   29,   26,   17,   13,   11,   10,    9,
+      122,  122,  122,  122,  122,  122,  122,  122,  122,  122,
+      122,  122,  122,  122,  122,  122,  122,  122,  122,  122,
+      122,  122,  122,  122,  122,  122,  122,  122,  122,  122,
+      122,  122,  122,  122,  122,  122,  122,  122,  122,  122,
+      122,  122,  122,  122,  122,  122,  122,  122,  122,  122,
+
+      122
     } ;
 
 /* Table of booleans, true if rule could match eol. */
@@ -633,7 +651,7 @@ static int fromihex(const char *s) {
 }
 
 
-#line 637 "scanner.c"
+#line 655 "scanner.c"
 
 #define INITIAL 0
 #define COMMENT 1
@@ -865,11 +883,6 @@ YY_DECL
 	register int yy_act;
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
-#line 112 "scanner.l"
-
-
-#line 872 "scanner.c"
-
     yylval = yylval_param;
 
 	if ( !yyg->yy_init )
@@ -898,6 +911,12 @@ YY_DECL
 		libconfig_yy_load_buffer_state(yyscanner );
 		}
 
+	{
+#line 112 "scanner.l"
+
+
+#line 919 "scanner.c"
+
 	while ( 1 )		/* loops until end-of-file is reached */
 		{
 		yy_cp = yyg->yy_c_buf_p;
@@ -915,7 +934,7 @@ YY_DECL
 yy_match:
 		do
 			{
-			register YY_CHAR yy_c = yy_ec[YY_SC_TO_UI(*yy_cp)];
+			register YY_CHAR yy_c = yy_ec[YY_SC_TO_UI(*yy_cp)] ;
 			if ( yy_accept[yy_current_state] )
 				{
 				yyg->yy_last_accepting_state = yy_current_state;
@@ -924,13 +943,13 @@ yy_match:
 			while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
 				{
 				yy_current_state = (int) yy_def[yy_current_state];
-				if ( yy_current_state >= 112 )
+				if ( yy_current_state >= 123 )
 					yy_c = yy_meta[(unsigned int) yy_c];
 				}
 			yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
 			++yy_cp;
 			}
-		while ( yy_current_state != 111 );
+		while ( yy_current_state != 122 );
 		yy_cp = yyg->yy_last_accepting_cpos;
 		yy_current_state = yyg->yy_last_accepting_state;
 
@@ -941,7 +960,7 @@ yy_find_action:
 
 		if ( yy_act != YY_END_OF_BUFFER && yy_rule_can_match_eol[yy_act] )
 			{
-			int yyl;
+			yy_size_t yyl;
 			for ( yyl = 0; yyl < yyleng; ++yyl )
 				if ( yytext[yyl] == '\n' )
 					   
@@ -1157,32 +1176,32 @@ YY_RULE_SETUP
 case 32:
 YY_RULE_SETUP
 #line 184 "scanner.l"
-{ yylval->sval = yytext; return(TOK_NAME); }
+{ yylval->fval = atof(yytext); return(TOK_FLOAT); }
 	YY_BREAK
 case 33:
 YY_RULE_SETUP
 #line 185 "scanner.l"
-{ yylval->fval = atof(yytext); return(TOK_FLOAT); }
+{ yylval->ival = atoi(yytext); return(TOK_INTEGER); }
 	YY_BREAK
 case 34:
 YY_RULE_SETUP
 #line 186 "scanner.l"
-{ yylval->ival = atoi(yytext); return(TOK_INTEGER); }
+{ yylval->llval = atoll(yytext); return(TOK_INTEGER64); }
 	YY_BREAK
 case 35:
 YY_RULE_SETUP
 #line 187 "scanner.l"
-{ yylval->llval = atoll(yytext); return(TOK_INTEGER64); }
+{ yylval->ival = fromihex(yytext); return(TOK_HEX); }
 	YY_BREAK
 case 36:
 YY_RULE_SETUP
 #line 188 "scanner.l"
-{ yylval->ival = fromihex(yytext); return(TOK_HEX); }
+{ yylval->llval = fromhex(yytext); return(TOK_HEX64); }
 	YY_BREAK
 case 37:
 YY_RULE_SETUP
 #line 189 "scanner.l"
-{ yylval->llval = fromhex(yytext); return(TOK_HEX64); }
+{ yylval->sval = yytext; return(TOK_NAME); }
 	YY_BREAK
 case 38:
 YY_RULE_SETUP
@@ -1245,7 +1264,7 @@ YY_RULE_SETUP
 #line 209 "scanner.l"
 ECHO;
 	YY_BREAK
-#line 1249 "scanner.c"
+#line 1268 "scanner.c"
 
 	case YY_END_OF_BUFFER:
 		{
@@ -1375,6 +1394,7 @@ ECHO;
 			"fatal flex scanner internal error--no action found" );
 	} /* end of action switch */
 		} /* end of scanning one token */
+	} /* end of user's declarations */
 } /* end of libconfig_yylex */
 
 /* yy_get_next_buffer - try to read in a new buffer
@@ -1542,7 +1562,7 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 		while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
 			{
 			yy_current_state = (int) yy_def[yy_current_state];
-			if ( yy_current_state >= 112 )
+			if ( yy_current_state >= 123 )
 				yy_c = yy_meta[(unsigned int) yy_c];
 			}
 		yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
@@ -1571,11 +1591,11 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 	while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
 		{
 		yy_current_state = (int) yy_def[yy_current_state];
-		if ( yy_current_state >= 112 )
+		if ( yy_current_state >= 123 )
 			yy_c = yy_meta[(unsigned int) yy_c];
 		}
 	yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
-	yy_is_jam = (yy_current_state == 111);
+	yy_is_jam = (yy_current_state == 122);
 
 	(void)yyg;
 	return yy_is_jam ? 0 : yy_current_state;
@@ -1997,7 +2017,7 @@ YY_BUFFER_STATE libconfig_yy_scan_bytes  (yyconst char * yybytes, yy_size_t  _yy
 	YY_BUFFER_STATE b;
 	char *buf;
 	yy_size_t n;
-	int i;
+	yy_size_t i;
     
 	/* Get memory for full buffer, including space for trailing EOB's. */
 	n = _yybytes_len + 2;
diff --git a/3rdparty/libconfig/scanner.h b/3rdparty/libconfig/scanner.h
index ac79ff5d1..f684433ec 100644
--- a/3rdparty/libconfig/scanner.h
+++ b/3rdparty/libconfig/scanner.h
@@ -17,7 +17,7 @@
 #define FLEX_SCANNER
 #define YY_FLEX_MAJOR_VERSION 2
 #define YY_FLEX_MINOR_VERSION 5
-#define YY_FLEX_SUBMINOR_VERSION 37
+#define YY_FLEX_SUBMINOR_VERSION 39
 #if YY_FLEX_SUBMINOR_VERSION > 0
 #define FLEX_BETA
 #endif