* traceback.c (tb_print): use sys.tracebacklimit as a maximum number of
traceback entries to print (default 1000).
* ceval.c (printtraceback): Don't print stack trace header -- this is now
done by tb_print().
* object.[ch], bltinmodule.c, fileobject.c: changed str() to call
strobject() which calls an object's __str__ method if it has one.
strobject() is also called by writeobject() when PRINT_RAW is passed.
* ceval.c: rationalize code for PRINT_ITEM (no change in function!)
* funcobject.c, codeobject.c: added compare and hash functionality.
Functions with identical code objects and the same global dictionary are
equal. Code objects are equal when their code, constants list and names
list are identical (i.e. the filename and code name don't count).
(hash doesn't work yet since the constants are in a list and lists can't
be hashed -- suppose this should really be done with a tuple now we have
resizetuple!)
return NULL for malloc(0) or realloc(p, 0). (This should be done
differently than wasting one byte, but alas...)
* Moved "add'l libraries" option in Makefile to an earlier place.
* Remove argument compatibility hacks (b) and (c).
* Add grey2mono, dither2mono and mono2grey to imageop.
* Dup the fd in socket.fromfd().
* Added new modules mpz, md5 (by JH, requiring GNU MP 1.2). Affects
Makefile and config.c.
* socketmodule.c: added socket.fromfd(fd, family, type, [proto]),
converted socket() to use of getargs().
