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.

For datetime, gentoo didn't seem to mind the %e format for strftime.  So, we just excercise those instead making sure that we don't crash.
For test_os, two cases were incorrect.

Also, explicitly connect to the IPV4 address.  On windows platforms supporting AF_INET6, the SocketProxy would connect using socket.create_connection('localhost', port) which would cycle through all address families and try to connect.  It would try connecting using AF_INET6 first and this would cause a delay of up to a second.

e.g. a __slots__ attribute which has not been set.

("windows sprintf", different than swprintf)

Needed for the windows CE port.

to str, bytes and bytearray could be optimized away by the compiler, letting
the interpreter segfault instead of raising an error.