Heavily revised, comprising revisions:
46640 - original trunk revision (backed out in r46655)
46647 - markup fix (backed out in r46655)
46692:46918 merged from branch aimacintyre-sf1454481

branch tested on buildbots (Windows buildbots had problems
not related to these changes).

not an argument.

that return None to indicate that the module is valid but no source is
available. This patch fixes that.

VARIANT_BOOL is a special _ctypes data type, not c_short.

the aliases defined in windows header files for the structures.

more comments about why it's this way at all; and removed what looked
like needless expense (sorting (i, j, k) triples directly should give
exactly the same order as sorting (i, (i, j, k)) pairs).

This module has been tested so far on Windows XP (Python 2.4 and 2.5a2),
Mac OS X (Python 2.3, 2.4, and 2.5a2), and Linux (Python 2.4 and 2.5a2).

Fix the CRT argument error handling for VisualStudio .NET 2005.  Install a CRT error handler and disable the assertion for debug builds.  This causes CRT to set errno to EINVAL.
This update fixes crash cases in the test suite where the default CRT error handler would cause process exit.

duplicated.  Thanks to Simon Percivall for the heads up.

copy is only in newer versions of zlib.  This should allow zlibmodule
to work with older versions like the Tru64 buildbot.

at the NeedForSpeed sprint.

when running with -O.

test_simple_validation_error still fails under -O.  That appears to be because
wsgiref's validate.py uses `assert` statements all over the place to check
arguments for sanity.  That should all be changed (it's not a logical error
in the software if a user passes bogus arguments, so this isn't a reasonable
use for `assert` -- checking external preconditions should generally raise
ValueError or TypeError instead, as appropriate).

derives from an IOError).  That seems valid.  Env Error includes both OSError
and IOError, so this seems like a reasonable fix.