version 2.5.6 (upgraded to bison 3.0.4, flex 2.5.37)

Version 2.5.6:

• upgrade win_bison to version 3.0.4, see Bison Release note
• add separate custom build rules for win_bison "custom_build_rules\win_bison_only" and win_flex "custom_build_rules\win_flex_only"

From version 2.5.5:

• fix missing Additional Options in custom build rules
• fix incorrect ----header-file option in flex custom build rules
• add some extra flex options to Visual Studio property pages:
  • Prefix --prefix="..."
  • C++ Class Name --yyclass="..."

From version 2.5.4:

• fix silent errors in custom build rules
• add some flex/bison options to Visual Studio property pages

List of options:

• Bison:
  • Output File Name --output="..."
  • Defines File Name --defines="..."
  • Debug --debug
  • Verbose --verbose
  • No lines --no-lines
  • File Prefix --file-prefix="..."
  • Graph File --graph="..."
  • Warnings --warnings="..."
  • Report --report="..."
  • Report File Name --report-file="..."
• Flex:
  • Output File Name --outfile="..."
  • Header File Name --header-file="..."
  • Windows compatibility mode --wincompat
  • Case-insensitive mode --case-insensitive
  • Lex-compatibility mode --lex-compat
  • Start Condition Stacks --stack
  • Bison Bridge Mode --bison-bridge
  • No #line Directives --noline
  • Generate Reentrant Scanner --reentrant
  • Generate C++ Scanner --c++
  • Debug Mode --debug