Suggested by Kevin Jacobs in bug report #129417.

Participate in garbage collection if available.
Potentially decref handlers in clear_handlers.
Partially reindent.
Put synthetic frame object on the stack to support better error output.
Expose Python codecs to pyexpat.
Add new Expat 1.2 handlers and API.
Fix memory leak: release self->handlers.
Do not expect PyModule_AddObject and PyModule_AddStringConstant in 2.0b1.
Raise exception in ParseFile.

pythonrun.c:  In Py_Finalize, don't reset the initialized flag until after
the exit funcs have run.
atexit.py:  in _run_exitfuncs, mutate the list of pending calls in a
threadsafe way.  This wasn't a contributor to bug 128475, it just burned
my eyeballs when looking at that bug.

added test script and expected output file as well
this closes patch 103297.
__all__ attributes will be added to other modules without first submitting
a patch, just adding the necessary line to the test script to verify
more-or-less correct implementation.

pdb (pdb calls it 'where').  Added 'bt' as an alias for 'where'.

parameters.  This closes the code part of patch 103314.

errors aren't that helpful), or doesn't contain what's expected from
it.  Also tweaked the test script so it compiles even if ucnhash is
missing.

    Barry, that comment belongs in the code, not in the checkin msg.
    The code *used* to do this correctly (as you well know, since you
    & I went thru considerable pain to fix this the first time).
    However, because the *reason* for the convolution wasn't recorded
    in the code as a comment, somebody threw it all away the first
    time it got reworked.

    c-code-isn't-often-self-explanatory-ly y'rs  - tim

default_3way_compare(): Stick the checkin message from 2.110 in a
comment.

to integer types (i.e. Py_uintptr_t, our spelling of C9X's uintptr_t).
ANSI specifies that pointer compares other than == and != to
non-related structures are undefined.  This quiets an Insure
portability warning.

between passes:  Win9x DOS boxes are limited to 50 lines max, and the result
of the first pass scrolls off irretrievably otherwise.  Also simplified
the goto-laden logic a bit.

Undefine and redefine PRAGMA_ALIGN_SUPPORTED under Carbon. Apple's "solution" of a funny define makes portable code impossible:-(

ctime, gmtime and localtime optional, defaulting to 'the current time' in
all cases. Adjust docs, add news item. Also convert all argument-handling to
METH_VARARGS. Closes SF patch #103265.

this is not hard to explain!

Closes SF bug #129345.

created by Andrew's setup.py script, *if* we're actually running from
the build directory.  (The test for that: whether the sys.path[-1]
ends in "/Modules".)

This has one disadvantage: it imports a fair amount of code from the
distutils package, just in order to be able to calculate the correct
pathname.  See if I care. :-)

New option "-q" to leave .pyc/.pyo alone.

tests for the first time -- like the Unix Makefile does.  This
avoids not catching problems in the bytecode generator and/or bytecode
marshalling.

fix set PYTHONPATH to something starting with $(srcdir)/build/lib....
The use of $(srcdir) was wrong here, it should be ./build/lib...