[Import-sig] Imputil

[Guido van Rossum]

OK, I see that there's some convergence here.  It appears that most
uses of PyImport_ImportModule() should really be using
PyImport_Import() instead.  There are two solutions: change the body
of PyImport_ImportModule() to call PyImport_Import(), or change all
(most?) calls to PyImport_ImportModule() to use PyImport_Import()
instead.

I'd vote for the former -- it's less work and more effective.  Note
that those places that really need to use the built-in import
primitive (e.g. the default built-in __import__ function) can use
PyImport_ImportModuleEx().  __import__ already does this.

Somebody submit a patch (or just check it in if you're feeling very
confident :-), please...

--Guido van Rossum (home page: http://www.python.org/~guido/)