calculate the build number.

Thanks to Tony Meyer for spotting my boo-boo.

even though they are generated.  Since these files require Python 2.2+,
it's possible they can't be created on a fresh system.

* Enable network tests when hunting for leaks
* Disable curses and audio tests properly when running -u all

are copied up to docs.python.org/dev

Needs lots more work.  Feel free to add code, fixes, or FIXME comments.

Patch by Ori Avtalion to fix a minor display glitch in the RightArrow.

no code changes.

the tests.  This stops the confusing/annoying:

    No handlers could be found for logger "cookielib"

message we got whenever some test running after test_logging
happened to use cookielib.py (when not using regrtest's -r,
this happened during test_urllib2; when using -r, it varied).

Will backport to 2.4.

returning 'a' as the delimiter.  It now returns '|', but not because I
understood better what the code was supposed to do.  Would someone that
understands the idea behind _guess_delimiter() (see its doc string) look to
see if my fallback choice is better than before or if it's just serendipity
that I picked the proper delimiter?

Floating point literals don't work in non-US locale in 2.5.  Patch and
new locale tests by Hye-Shik Chang.

weakref object itself is deleted first.

A patch by mwh to check that user-defined mro's are reasonable
enough.

* set sq_repeat and sq_concat to NULL for user-defined new-style
  classes, as a way to fix a number of related problems.  See
  test_descr.notimplemented()).  One of these problems was fixed
  in r25556 and r25557 but many more existed; this is a general
  fix and thus reverts r25556-r25557.

* to avoid having PySequence_Repeat()/PySequence_Concat() failing
  on user-defined classes, they now fall back to nb_add/nb_mul if
  sq_concat/sq_repeat are not defined and the arguments appear to
  be sequences.

* added tests.

Backport candidate.