Will backport.

Will backport to release24.

return rather than use it again.

readdir().

Add (int) casts to silence compiler warnings.
Raise Python exceptions for overflows.

added to gc.collect().  Updated docs, unit test, and NEWS entry.

(Also, fixed a typo in NEWS.)

All of these (except _lsprof.c) should be backported.  Particularly
the hotshot change which validates sys.path.  Can someone backport?

from static analysis.  v was already checked for NULL above, so we don't
need a second check.

This is a alternative version of patch #1379332.

Add warning on Win9x.

The failure definitely seems timing related.  This change *seems* to work.
Since the failure isn't doesn't occur consistently, it's hard to tell.

Running these tests on Solaris in this order:
	test_urllibnet test_operator test_cgi \
	test_isinstance test_future test_ast test_logging

generally caused a failure (about 50% of the time) before the sleep.
I couldn't provoke the failure with the sleep.

This should really be cleaned up by using threading.Events or something
so it is not timing dependent and doesn't hang forever on failure.

  test_codecmaps_tw test_importhooks test_socket_ssl

I don't completely understand the cause, but there's a lot of import magic
going on and this is the smallest change which fixes the problem.

Actually define Py_RefTotal as a Py_ssize_t.

I tried to handle Win64 properly, but please review.

One place it wasn't necessary since mod was already checked.
Inline the check that mod != NULL for the other use.

Add note to NEWS.

- Do some minor code clean-ups.

testing line ending compatibility.