Added generators for EnableMenuItem and CheckMenuItem (which have Mac in front of their name in the include files).

Made the core toolbox modules carbon-compatible using the new greylist feature of bgen: non-carbon methods are still included in non-carbon MacPython. The issue of backward compatibility of Python code is still open.
Macmodule and macosmodule have also been carbonified. Some functionality is still missing there.

  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.

argument and return a Control or Menu object.

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.