* gdk/Screen.custom : manually implement FontOptions property so
we can use reflection to access the internal Mono.Cairo ctor.
* gdk/Gdk.metadata : list marshaling, method-to-property renames,
and some hides form manual implementation. Hide
gdk_atom_intern_static_string wrapper since it is pointless outside
the context of C code.
svn path=/trunk/gtk-sharp/; revision=63366
