* generator/Makefile.am : add new file.
* generator/SimpleBase.cs : new class for non-generated type mappers.
* generator/*Gen.cs : first refactoring of "Simple" generatable types.
Derive them all from SimpleBase. More to come.
svn path=/trunk/gtk-sharp/; revision=38097
* generator/*Gen.cs : add ToNativeReturnType to deal with
the g_free string nonsense in the virtual method case.
svn path=/trunk/gtk-sharp/; revision=36289