svn+ssh://pythondev@svn.python.org/python/branches/tnelson-trunk-bsddb-47-upgrade

svn+ssh://pythondev@svn.python.org/python/branches/trunk-math

Let os.ftruncate raise OSError like documented.

issue 4293:  make test_capi.py more robutst, it times out on some platforms, presumably waiting for threads.  Lower the thread count to 16.

always try to read the "zip64 end of directory structure".

+ fix a declaration to make it match the one in pythonrun.h

compare slots by address, not by name.

with other applications.

Reviewed by Martin, will backport to 2.6 and 3.0

pasted and changed afterwards.

Fix two test cases in test_os.  ftruncate raises IOError unlike all the others which raise OSError.  And close() on some platforms doesn't complain when given an invalid file descriptor.