JOHNE - Modifications needed to support win32-fixup.pl
JOHNE - Add some auto-generated files from the gdkmm branch (note that because of bugs in the new gmmproc script we cannot yet auto-generate gtkmm)

The above means that (currently) this library won't build on anybody's system, other than mine!
JOHNE - Add the Visual Studio project files - even though gtkmm isn't yet buildable without manual inclusion of its source files (which we'll need to auto-generate eventually)