* DNA_packedFile_types: added rna definitions for packed files
* also experimentally filled in correct struct 'PackedFile' in image rna for testing.
* updated MSVC projectfiles (also for rna_curve.c and rna_vfont.c)
Note:
I removed PackedFile->flags, I did grep through source and a complete recompile of blender trunk svn without them too, so they obviously aren't needed anymore. A bit of cleaning up :)