Backported to 2.3.

had slightly different error messages.

* tee object is no longer subclassable
* independent iterators renamed to "itertools.tee_iterator"
* fixed doc string typo and added entry in the module doc string

* Fixed typo in docstring for 'failUnlessAlmostEqual()'

* Removed unnecessary use of 'float()' for time values.

* Removed apparently unnecessary import of unittest. At some point in
  the distant past I believe it was necessary otherwise the 'TestCase'
  that a module saw was not the same as the 'TestCase' seen within
  'unittest', and the user's TestCase subclasses were not recognised as
  subclasses of the TestCase seen within unittest. Seems not to be
  necessary now.

alone, because there can be no guarantee re the semantics of += vs + .

no-cyclic-comparison patch at the same time as errors.c.

Reverting ceval.c to the previous revision.

a performance bug in sum(manylists)), same as in 2.3 maintenance branch.

* Add error checking code to PyList_Append() call.

* Replace PyObject_CallMethod(to->outbasket, "pop", NULL) with equivalent
  in-line code.  Inlining is important here because the search for the
  pop method will occur for every element returned by the iterator.

* Make tee's dealloc() a little smarter.  If the trailing iterator is
  being deallocated, then the queue data is no longer needed and can
  be freed.

[Patch #772077 from Tim Rice] Fix for compiling the readline module on UnixWare; fix goofy comment indent.  2.3 bugfix candidate

[Bug #822668] tarfile raises an exception if the tarfile is gzipped and is too large; the gzip filesize should be written out mod 2**32.  (Reported by Johan Fredrik Ohman)

charmaptranslate_makespace() allocated more memory than required for the
next replacement but didn't remember that fact, so memory size was growing
exponentially every time a replacement string is longer that one character.
This fixes SF bug #828737.

It works like the pure python verion except:
* it stops storing data after of the iterators gets deallocated
* the data queue is implemented with two stacks instead of one dictionary.

  struct_pwent; this has been renamed to struct_passwd.  (The old name
  is still supported for backwards compatibility.)

Backported to 2.3.

  since this gets asked at the docs at python.org address a lot
- fix some minor style violations and inconsistencies

[Part of patch #648322] Delete the poll2() function, which uses a 'poll' extension module that was once part of Medusa.  Contributed by Kjetil Jacobsen

  of the dispatcher object break.  e.g. if you close() the object, it
  tries to remove itself from the default map, not from the map the
  dispatcher was created with.

  The patch, from Stephane Ninin, records the map as an attribute of
  the dispatcher instance.

2.3 bugfix candidate.

This closes SF bug #827260.

Even if a new dict is generated for locals, it is stored in
f->f_locals.

The patch was tweaked slightly.  It's get a different mechanism for
generating the cnonce which uses /dev/urandom when possible to
generate less-easily-guessed random input.

Also rearrange the imports so that they are alphabetical and
duplicates are eliminated.

Add a few XXX comments about things left undone and things that could
be improved.

- start cleaning up the markup for consistency
- comment out the reference to a MS KnowledgeBase article that doesn't
  seem to be present at msdn.microsoft.com; hopefully someone can
  point out an alternate source for the relevant information