Updated libconfig to version 1.5

- Based on https://github.com/hyperrealm/libconfig/releases/tag/v1.5
  f9f23d7a95608936ea7d839731dbd56f1667b7ed
- Improvements that come with this libconfig version:
  * Don't fclose() a null pointer.
  * check if file being opened is a directory
  * added config_set_options(), config_get_options(), setOptions(),
    getOptions().
  * renamed config_setting_lookup_from() to config_setting_lookup() and
    documented it
  * floating point precision loss patch
  * scanner code cleanup
  * parser code cleanup
  * bugfix; capture root filename
- Parser generated with Bison 2.7
- Scanner generated with flex 2.6
- This includes the windows-compatibility commit
  909b06c07e30e456cc63f58d31b0e2f3aad4cc43 from upstream (although not
  part of version 1.5)

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

4 files changed, 198 insertions, 72 deletions

diff --git a/3rdparty/libconfig/extra/doc/libconfig.texi b/3rdparty/libconfig/extra/doc/libconfig.texi
index 52dca20fc..9441dc2ac 100644
--- a/3rdparty/libconfig/extra/doc/libconfig.texi
+++ b/3rdparty/libconfig/extra/doc/libconfig.texi
@@ -6,8 +6,8 @@
 @setfilename libconfig.info
 @settitle libconfig
 
-@set edition 1.4.9
-@set update-date 28 September 2012
+@set edition 1.5
+@set update-date 16 May 2015
 @set subtitle-text A Library For Processing Structured Configuration Files
 @set author-text Mark A.@: Lindner
 
@@ -36,7 +36,7 @@
 
 @page
 @vskip 0pt plus 1filll
-Copyright @copyright{} 2005-2012  Mark A Lindner
+Copyright @copyright{} 2005-2014  Mark A Lindner
 
 Permission is granted to make and distribute verbatim copies of
 this manual provided the copyright notice and this permission notice
@@ -512,8 +512,11 @@ more hexadecimal digits (@samp{0} - @samp{9}, @samp{A} - @samp{F},
 @section 64-bit Integer Values
 
 Long long (64-bit) integers are represented identically to integers,
-except that an 'L' character is appended to indicate a 64-bit
-value. For example, @samp{0L} indicates a 64-bit integer value 0.
+except that an `L' character is appended to indicate a 64-bit
+value. For example, @samp{0L} indicates a 64-bit integer value 0.  As
+of version 1.5 of the library, the trailing `L' is optional; if the
+integer value exceeds the range of a 32-bit integer, it will
+automatically be interpreted as a 64-bit integer.
 
 @node Floating Point Values, Boolean Values, 64-bit Integer Values, Configuration Files
 @comment  node-name,  next,  previous,  up
@@ -766,21 +769,60 @@ configuration @var{config}, or @code{NULL} if none is set.
 
 @end deftypefun
 
-@deftypefun void config_set_auto_convert (@w{config_t *@var{config}}, @w{int @var{flag}})
-@deftypefunx int config_get_auto_convert (@w{const config_t *@var{config}})
+@deftypefun void config_set_options (@w{config_t *@var{config}}, @w{int @var{options}})
+@deftypefunx int config_get_options (@w{config_t *@var{config}})
+
+These functions set and get the options for the configuration
+@var{config}. The options affect how configurations are read and
+written. The following options are defined:
+
+@table @code
 
-@code{config_set_auto_convert()} enables number auto-conversion for
-the configuration @var{config} if @var{flag} is non-zero, and disables
-it otherwise. When this feature is enabled, an attempt to retrieve a
+@item CONFIG_OPTION_AUTOCONVERT
+Turning this option on enables number auto-conversion for
+the configuration. When this feature is enabled, an attempt to retrieve a
 floating point setting's value into an integer (or vice versa), or
 store an integer to a floating point setting's value (or vice versa)
 will cause the library to silently perform the necessary conversion
 (possibly leading to loss of data), rather than reporting failure. By
-default this feature is disabled.
+default this option is turned off.
+
+@item CONFIG_OPTION_SEMICOLON_SEPARATORS
+This option controls whether a semicolon (`;') is output after each setting
+when the configuration is written to a file or stream. (The semicolon
+separators are optional in the configuration syntax.) By default this
+option is turned on.
+
+@item CONFIG_OPTION_COLON_ASSIGNMENT_FOR_GROUPS
+This option controls whether a colon (`:') is output between each
+group setting's name and its value when the configuration is written to
+a file or stream. If the option is turned off, an equals sign (`=') is
+output instead. (These tokens are interchangeable in the configuration
+syntax.) By default this option is turned on.
+
+@item CONFIG_OPTION_COLON_ASSIGNMENT_FOR_NON_GROUPS
+This option controls whether a colon (`:') is output between each
+non-group setting's name and its value when the configuration is written
+to a file or stream. If the option is turned off, an equals sign (`=')
+is output instead. (These tokens are interchangeable in the configuration
+syntax.) By default this option is turned off.
+
+@item CONFIG_OPTION_OPEN_BRACE_ON_SEPARATE_LINE
+This option controls whether an open brace (`@{') will be written on its own
+line when the configuration is written to a file or stream. If the option is
+turned off, the brace will be written at the end of the previous line.
+By default this option is turned on.
+
+@end table
+
+@end deftypefun
+
+@deftypefun void config_set_auto_convert (@w{config_t *@var{config}}, @w{int @var{flag}})
+@deftypefunx int config_get_auto_convert (@w{const config_t *@var{config}})
 
-@code{config_get_auto_convert()} returns @code{CONFIG_TRUE} if number
-auto-conversion is currently enabled for @var{config}; otherwise it
-returns @code{CONFIG_FALSE}.
+These functions get and set the @code{CONFIG_OPTION_AUTO_CONVERT}
+option. They are obsoleted by the @code{config_set_options()} and
+@code{config_get_options()} functions described above.
 
 @end deftypefun
 
@@ -839,6 +881,15 @@ setting was not found.
 
 @end deftypefun
 
+@deftypefun {config_setting_t *} config_setting_lookup (@w{const config_setting_t * @var{setting}}, @w{const char * @var{path}})
+
+This function locates a setting by a path @var{path} relative to
+the setting @var{setting}. It returns a pointer to the
+@code{config_setting_t} structure on success, or @code{NULL} if the
+setting was not found.
+
+@end deftypefun
+
 @deftypefun int config_setting_get_int (@w{const config_setting_t * @var{setting}})
 @deftypefunx {long long} config_setting_get_int64 (@w{const config_setting_t * @var{setting}})
 @deftypefunx double config_setting_get_float (@w{const config_setting_t * @var{setting}})
@@ -1146,17 +1197,45 @@ common base exception @code{ConfigException}.
 A @code{SettingTypeException} is thrown when the type of a setting's
 value does not match the type requested.
 
+@deftypemethod SettingTypeException {} SettingTypeException (@w{const Setting &@var{setting}})
+@deftypemethodx SettingTypeException {} SettingTypeException (@w{const Setting &@var{setting}}, @w{int @var{index}})
+@deftypemethodx SettingTypeException {} SettingTypeException (@w{const Setting &@var{setting}}, @w{const char *@var{name}})
+
+These methods construct @code{SettingTypeException} objects for the given @var{setting} and/or member @var{index} or @var{name}.
+
+@end deftypemethod
+
 @tindex SettingNotFoundException
 A @code{SettingNotFoundException} is thrown when a setting is not found.
 
+@deftypemethod SettingNotFoundException {} SettingNotFoundException (@w{const Setting &@var{setting}}, @w{int @var{index}})
+@deftypemethodx SettingNotFoundException {} SettingNotFoundException (@w{const Setting &@var{setting}}, @w{const char *@var{name}})
+@deftypemethodx SettingNotFoundException {} SettingNotFoundException (@w{const char *@var{path}})
+
+These methods construct @code{SettingTypeException} objects for the given @var{setting} and member @var{index} or @var{name}, or path @var{path}.
+
+@end deftypemethod
+
 @tindex SettingNameException
 A @code{SettingNameException} is thrown when an attempt is made to add
 a new setting with a non-unique or invalid name.
 
+@deftypemethod SettingNameException {} SettingNameException (@w{const Setting &@var{setting}}, @w{const char *@var{name}})
+
+This method constructs a @code{SettingNameExcpetion} object for the given @var{setting} and member name @var{name}.
+
+@end deftypemethod
+
 @tindex ParseException
 A @code{ParseException} is thrown when a parse error occurs while
 reading a configuration from a stream.
 
+@deftypemethod ParseException {} ParseException (@w{const char *@var{file}}, @w{int @var{line}}, @w{const char *@var{error}})
+
+This method constructs a @code{ParseException} object with the given filename @var{file}, line number @var{line}, and error message @var{error}.
+
+@end deftypemethod
+
 @tindex FileIOException
 A @code{FileIOException} is thrown when an I/O error occurs while
 reading/writing a configuration from/to a file.
@@ -1247,21 +1326,60 @@ configuration, or @code{NULL} if none is set.
 
 @end deftypemethod
 
+@deftypemethod Config void setOptions (int @var{options})
+@deftypemethodx Config int getOptions ()
+
+These methods set and get the options for the configuration. The
+options affect how configurations are read and written. The following
+options are defined:
+
+@table @code
+
+@item OptionAutoConvert
+Turning this option on enables number auto-conversion for
+the configuration. When this feature is enabled, an attempt to retrieve a
+floating point setting's value into an integer (or vice versa), or
+store an integer to a floating point setting's value (or vice versa)
+will cause the library to silently perform the necessary conversion
+(possibly leading to loss of data), rather than reporting failure. By
+default this option is turned off.
+
+@item OptionSemicolonSeparators
+This option controls whether a semicolon (`;') is output after each setting
+when the configuration is written to a file or stream. (The semicolon
+separators are optional in the configuration syntax.) By default this
+option is turned on.
+
+@item OptionColonAssignmentForGroups
+This option controls whether a colon (`:') is output between each
+group setting's name and its value when the configuration is written to
+a file or stream. If the option is turned off, an equals sign (`=') is
+output instead. (These tokens are interchangeable in the configuration
+syntax.) By default this option is turned on.
+
+@item OptionColonAssignmentForNonGroups
+This option controls whether a colon (`:') is output between each
+non-group setting's name and its value when the configuration is written
+to a file or stream. If the option is turned off, an equals sign (`=')
+is output instead. (These tokens are interchangeable in the configuration
+syntax.) By default this option is turned off.
+
+@item OptionOpenBraceOnSeparateLine
+This option controls whether an open brace (`@{') will be written on its own
+line when the configuration is written to a file or stream. If the option is
+turned off, the brace will be written at the end of the previous line.
+By default this option is turned on.
+
+@end table
+
+@end deftypemethod
+
 @deftypemethod Config void setAutoConvert (bool @var{flag})
 @deftypemethodx Config bool getAutoConvert ()
 
-@code{setAutoConvert()} enables number auto-conversion for the
-configuration if @var{flag} is @code{true}, and disables it
-otherwise. When this feature is enabled, an attempt to assign a
-floating point setting to an integer (or vice versa), or
-assign an integer to a floating point setting (or vice versa) will
-cause the library to silently perform the necessary conversion
-(possibly leading to loss of data), rather than throwing a
-@code{SettingTypeException}. By default this feature is disabled.
-
-@code{getAutoConvert()} returns @code{true} if number auto-conversion
-is currently enabled for the configuration; otherwise it returns
-@code{false}.
+These methods get and set the @code{OptionAutoConvert} option. They
+are obsoleted by the @code{setOptions()} and @code{getOptions()}
+methods described above.
 
 @end deftypemethod
 
@@ -1542,6 +1660,15 @@ configuration.
 
 @end deftypemethod
 
+@deftypemethod Setting {Setting &} lookup (@w{const char * @var{path}})
+@deftypemethodx Setting {Setting &} lookup (@w{const std::string &@var{path}})
+
+This function locates a setting by a path @var{path} relative to
+this setting. If requested setting is not found, a
+@code{SettingNotFoundException} is thrown.
+
+@end deftypemethod
+
 @deftypemethod Setting bool lookupValue (@w{const char *@var{name}}, @w{bool &@var{value}})
 @deftypemethodx Setting bool lookupValue (@w{const std::string &@var{name}}, @w{bool &@var{value}})
 
@@ -1744,6 +1871,17 @@ These methods test if the setting has a child setting with the given
 @code{false} otherwise. These methods do not throw exceptions.
 
 @end deftypemethod
+@page
+@deftypemethod Setting iterator begin ()
+@deftypemethodx Setting iterator end ()
+@deftypemethodx Setting const_iterator begin ()
+@deftypemethodx Setting const_iterator end ()
+
+These methods return STL-style iterators that can be used to enumerate
+the child settings of a given setting. If the setting is not an array, list,
+or group, they throw a @code{SettingTypeException}.
+
+@end deftypemethod
 
 @deftypemethod Setting int getLength ()
 
@@ -1878,7 +2016,7 @@ Terminals are defined below as regular expressions:
 @item @code{hex} @tab
 @code{0[Xx][0-9A-Fa-f]+}
 @item @code{hex64} @tab
-@code{0[Xx][0-9A-Fa-f]+L(L)?}
+@code{0[Xx][0-9A-Fa-f]+(L(L)?)?}
 @item @code{float} @tab
 @code{([-+]?([0-9]*)?\.[0-9]*([eE][-+]?[0-9]+)?)|([-+]([0-9]+)(\.[0-9]*)?[eE][-+]?[0-9]+)}
 @end multitable
diff --git a/3rdparty/libconfig/extra/gen/clangwarnings.patch b/3rdparty/libconfig/extra/gen/clangwarnings.patch
index 4240f84d2..c3b45ef33 100644
--- a/3rdparty/libconfig/extra/gen/clangwarnings.patch
+++ b/3rdparty/libconfig/extra/gen/clangwarnings.patch
@@ -11,26 +11,5 @@ index 3595578..26444f8 100644
 -  YY_SYMBOL_PRINT (yymsg, yytype, yyvaluep, yylocationp);
 +  YY_SYMBOL_PRINT (yymsg ? yymsg : "Deleting", yytype, yyvaluep, yylocationp);
  
-   switch (yytype)
-     {
-diff --git a/scanner.c b/scanner.c
-index aebd34c..c3a717f 100644
---- a/scanner.c
-+++ b/scanner.c
-@@ -1500,6 +1500,8 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
- 	else
- 		ret_val = EOB_ACT_CONTINUE_SCAN;
- 
-+#ifndef __clang_analyzer__
-+	// FIXME: Clang's static analyzer complains about leaking the result of libconfig_yyrealloc
- 	if ((yy_size_t) (yyg->yy_n_chars + number_to_move) > YY_CURRENT_BUFFER_LVALUE->yy_buf_size) {
- 		/* Extend the array by 50%, plus the number we really need. */
- 		yy_size_t new_size = yyg->yy_n_chars + number_to_move + (yyg->yy_n_chars >> 1);
-@@ -1507,6 +1509,7 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
- 		if ( ! YY_CURRENT_BUFFER_LVALUE->yy_ch_buf )
- 			YY_FATAL_ERROR( "out of dynamic memory in yy_get_next_buffer()" );
- 	}
-+#endif // __clang_analyzer__
- 
- 	yyg->yy_n_chars += number_to_move;
- 	YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[yyg->yy_n_chars] = YY_END_OF_BUFFER_CHAR;
+   YYUSE (yytype);
+ }
diff --git a/3rdparty/libconfig/extra/gen/grammar.y b/3rdparty/libconfig/extra/gen/grammar.y
index 7eab74780..2e4cfa45f 100644
--- a/3rdparty/libconfig/extra/gen/grammar.y
+++ b/3rdparty/libconfig/extra/gen/grammar.y
@@ -1,8 +1,8 @@
 /* -*- mode: C -*- */
 /* ----------------------------------------------------------------------------
    libconfig - A library for processing structured configuration files
-   Copyright (C) 2013-2015  Hercules Dev Team
-   Copyright (C) 2005-2010  Mark A Lindner
+   Copyright (C) 2013-2016  Hercules Dev Team
+   Copyright (C) 2005-2014  Mark A Lindner
 
    This file is part of libconfig.
 
@@ -23,7 +23,7 @@
 */
 
 %defines
-%output="y.tab.c"
+%output "y.tab.c"
 %pure-parser
 %lex-param{void *scanner}
 %parse-param{void *scanner}
diff --git a/3rdparty/libconfig/extra/gen/scanner.l b/3rdparty/libconfig/extra/gen/scanner.l
index 6bcce8116..f717ac273 100644
--- a/3rdparty/libconfig/extra/gen/scanner.l
+++ b/3rdparty/libconfig/extra/gen/scanner.l
@@ -1,8 +1,8 @@
 /* -*- mode: C -*- */
 /* --------------------------------------------------------------------------
    libconfig - A library for processing structured configuration files
-   Copyright (C) 2013-2015  Hercules Dev Team
-   Copyright (C) 2005-2010  Mark A Lindner
+   Copyright (C) 2013-2016  Hercules Dev Team
+   Copyright (C) 2005-2014  Mark A Lindner
 
    This file is part of libconfig.
 
@@ -23,33 +23,30 @@
 */
 
 %option nounistd
+%option never-interactive
 %option reentrant
 %option noyywrap
 %option yylineno
 %option nounput
 %option bison-bridge
-%option never-interactive
 %option header-file="scanner.h"
 %option outfile="lex.yy.c"
 %option extra-type="struct scan_context *"
 
-%top{
-#include "scanctx.h"
-}
-
 %{
+
 #ifdef _MSC_VER
 #pragma warning (disable: 4996)
-/* disable MSVC warning "signed/unsigned mismatch" associated with code generated by flex versions such as 2.5.35. */
-#pragma warning (disable:4018)
 #endif
 
 #include <stdlib.h>
 #include <ctype.h>
 #include <string.h>
+#include <limits.h>
+#include "parsectx.h"
+#include "scanctx.h"
 #include "grammar.h"
 #include "wincompat.h"
-#include "parsectx.h"
 
 #define YY_NO_INPUT // Suppress generation of useless input() function
 
@@ -87,13 +84,6 @@ static unsigned long long fromhex(const char *s)
 #endif /* __MINGW32__ */
 }
 
-static int fromihex(const char *s) {
-  unsigned long l = strtoul(s, NULL, 16);
-  if (l > INT32_MAX)
-    l &= INT32_MAX;
-  return (int)l;
-}
-
 %}
 
 true              [Tt][Rr][Uu][Ee]
@@ -183,9 +173,28 @@ include_open      ^[ \t]*@include[ \t]+\"
 {true}            { yylval->ival = 1; return(TOK_BOOLEAN); }
 {false}           { yylval->ival = 0; return(TOK_BOOLEAN); }
 {float}           { yylval->fval = atof(yytext); return(TOK_FLOAT); }
-{integer}         { yylval->ival = atoi(yytext); return(TOK_INTEGER); }
+{integer}         {
+                    long long llval;
+                    llval = atoll(yytext);
+                    if((llval < INT_MIN) || (llval > INT_MAX))
+                    {
+	              yylval->llval = llval;
+	              return(TOK_INTEGER64);
+                    }
+                    else
+                    {
+	              yylval->ival = (int)llval;
+	              return(TOK_INTEGER);
+                    }
+                  }
 {integer64}       { yylval->llval = atoll(yytext); return(TOK_INTEGER64); }
-{hex}             { yylval->ival = fromihex(yytext); return(TOK_HEX); }
+{hex}             {
+                    unsigned long ulval = strtoul(yytext, NULL, 16);
+                    if (ulval > INT32_MAX)
+                      ulval &= INT32_MAX;
+                    yylval->ival = (int)ulval;
+                    return(TOK_HEX);
+                  }
 {hex64}           { yylval->llval = fromhex(yytext); return(TOK_HEX64); }
 {name}            { yylval->sval = yytext; return(TOK_NAME); }
 \[                { return(TOK_ARRAY_START); }