[Distutils] Changes in r72585

[Tim Golden]

[coming from a thread on python-win32:
http://mail.python.org/pipermail/python-win32/2009-May/009130.html
]

In short: changes to build_ext.py in r72585 caused the pywin32
packages to stop building correctly. The changes in question
are those which call get_ext_filename with the short form of
the ext.name (without the package prefix). The pywin32 setup.py
expects the fully-qualified name in the get_ext_filename in
its subclass.

Now I don't know whether this is an incautious change to build_ext
or a false -- altho' historically valid -- assumption on the part
of the pywin32 developers. You can see their code here at line 1119:

http://pywin32.cvs.sourceforge.net/viewvc/pywin32/pywin32/setup.py?revision=1.107&view=markup

I'm afraid I'm fairly ignorant of the design rationale behind
distutils; I'm hoping someone here has a better idea :)

Opinions?

TJG