Fixed DEF files for win32

["Andrew E. Makeev" <andrew solvo ru>]

Good day,

My friend have been building latest GTKMM on win32 platform.
So, now we have packages with fully functional GTK, GLIB, MM (also 
dispatcher included) libraries.

Unfortunatelly he is too lazy to make a patch for DEF files that save 
whole GTK functionality on win32. Please, consider his offer to get 
fixed files as attach and apply patches yourself. (Files not attached yet.)

Also, couple instructions how to build it on win32:
1. Downgrade MSYS to latest stable version (probably 1.0.8).
2. Do not update binutils for MINGW (use old ones).

Regards,
andrew