handle = Ctl.as_Resource(ctl)
ctl = Ctl.as_Control(handle)
and similarly for List, Menu, TE. The old handle.as_Control() methods are
still there for backward compatability.
declaration, probably so the universal headers are useable on
windows/unix too. Have to think of a more definite workaround later,
for now we manually declare the old names in the *edit.py files.