[TexturePacker/Win32] - don't copy sdl dlls to TexturePacker (not needed
anymore)
[win32] - added giflib package (needed for TexturePacker and for new gif
support in core later aswell)
[win32] - added static libs to zlib package
[TexturePacker/Win32] - link zlib statically
[TexturePacker/Win32] - link statically against libgif - add
dependencyfree TexturePacker.exe