[Distutils] Multi-distribution distributions

[Paul Prescod]

I'm somewhat surprised by the fact that some distributions (e.g. Numpy,
Zodb) have multiple setup.py programs. As far as I know, these
setup.py's do not share information so there is no way to do a
bdist_wininst or bdist_rpm that builds a single distribution for these
multiple sub-packages.

I see this as a fairly large problem! The bdist_ functions are an
important part of Distutils functionality.

 Paul Prescod