Flávio J. Saraiva authored Sep 29, 2011 and Flávio J. Saraiva committed Oct 27, 2011

- change type of string constants from char[] to const char*
- convert wchar_t filename to multibyte char
- fix definition of ROINT_DLLAPI
- fix incorrect initialization of SPR::Image
- fix missing strnicmp or error
- fix non-portable use of libpng
- remove compiler-specific defines and pragmas
- remove invalid typedefs