fixed #1642: Cxx-generator now works ok on windows, it uses the same config file as unix. For details, please refer to README file.
fixed #1642: Updating genbindings.sh, adding empty variable `extra_flags`.
fixed #1642: Renaming `extra_flag` to `extra_flags`.
Adding dos2unix.exe
Adding ._.XXX files to ignore file.
Fixing bugs of genbindings-win32.bat on windows xp.
Merge pull request #2182 from dumganhar/master

fixed #1642: Cxx-generator now works ok on windows, it uses the same config file as unix. For details, please refer to README file.