With the exception of the enumeration sources (gdkenumtypes.h and
gdkenumtypes.c), the generared sources in gdk/ (gdkversionmacros.h,
gdkresources.[c|h], gdkmarshalers.[c|h] are now generated in the
gtk3-prebuild projects with the NMake Makefiles.
Make build/win32/config-msvc.mak filled with the version info from
autotools, too.
