* codegen/defs-parse.pl : struct generation. Added float and double
type mapping entries.
* codegen/hardcoded.defs : GdkGeometry definition. define-struct
doesn't appear to be supported in the current defs files. This file
will be used for manual definition of unsupported defs.
* codegen/makefile : add hardcoded.defs.
svn path=/trunk/gtk-sharp/; revision=1256
