PyMem_{Del, DEL} doesn't work yet (compilation problems).

pyport.h:  _PyMem_EXTRA is gone.

pmem.h:  Repaired comments.  PyMem_{Malloc, MALLOC} and
PyMem_{Realloc, REALLOC} now make the same x-platform guarantees when
asking for 0 bytes, and when passing a NULL pointer to the latter.

object.c:  PyMem_{Malloc, Realloc} just call their macro versions
now, since the latter take care of the x-platform 0 and NULL stuff
by themselves now.

pypcre.c, grow_stack():  So sue me.  On two lines, this called
PyMem_RESIZE to grow a "const" area.  It's not legit to realloc a
const area, so the compiler warned given the new expansion of
PyMem_RESIZE.  It would have gotten the same warning before if it
had used PyMem_Resize() instead; the older macro version, but not the
function version, silently cast away the constness.  IMO that was a wrong
thing to do, and the docs say the macro versions of PyMem_xyz are
deprecated anyway.  If somebody else is resizing const areas with the
macro spelling, they'll get a warning when they recompile now too.

all the same within the #ifdef WITH_PYMALLOC block.

PyMalloc_ prefix and use PyObject_ instead.  I'm not sure about the
debugging functions.  Perhaps they should stay as PyMalloc_.

PyObject_Del and PyObject_GC_Del can now be used as a function
designators.

designators.

Remove PyMalloc_New.

compatibility function.

Make PyObject_GC_Track and PyObject_GC_UnTrack functions instead of
trivial macros wrapping functions.  Provide binary compatibility
functions.

it's enabled.

it's enabled.

Allow PyObject_Del, PyObject_Free, and PyObject_GC_Del to be used as
function designators.  Provide source compatibility macros.

Make PyObject_GC_Track and PyObject_GC_UnTrack functions instead of
trivial macros wrapping functions.

Get rid of backward compatibility modules. Do this fairly early in the 2.3 cycle so we don't shoot ourselves in the foot later.

The deprecation is now listed in PEP 4.

not-GPL-compatible to GPL-compatible, with a footnote explaining that
RMS disagrees.  I'm not going to discuss this further -- both sides
(CNRI and RMS) will argue their POV till they're blue in the face.

Got rid of ifdefs for long-obsolete GUSI versions and other stuff that is now standard (appearance, interned strings)

module necessarily raises.

This is nice for use with "make TESTOPTS='-u all' test".

The bug report pointed out a bogosity in the comment block explaining
thread safety for arena management.  Repaired that comment, repaired a
couple others while I was at it, and added an assert.

_PyMalloc_DebugRealloc:  If this needed to get more memory, but couldn't,
it erroneously freed the original memory.  Repaired that.

This is for 2.3 only (unless we decide to backport the new pymalloc).

Different .pyc icon - use "paler" colors to better differentiate it from the main .py icon.  As discussed with Tim (prompted by cl.lpy posting)