[Python-Dev] Import APIs

[Georg Brandl]

Currently, all C code that needs to import a module uses
PyImport_ImportModule which
(1) calls __builtin__.__import__
(2) attempts relative imports

Most of the time, though, at least (2) is wrong.
If we want to keep (1), PyImport_ImportModuleLevel can't be
used as a replacement.
So there should be a new API, called PyImport_ImportAbsolute
that gets a flag whether relative import should be allowed.

Georg