Also, decided IDENTCHARS is better as global, after all.

Fixes #612595. Will backport to 2.2.

fairly large, most are caused by reformatting section and subsection
headings.  The changes fall into the following categories:

    * reformatted section and subsection headers.

    * escaped isolated asterisks which would be interpreted as starting bold
      or italic text (e.g. "void (*)(PyObject \*)").

    * quoted stuff that looks like internal references but isn't
      (e.g. ``PyCmp_``).

    * changed visually balanced quotes to just use apostrophes
      (e.g. "'string'" instead of "`string'").

    * introduced and indenting multiline chunks of code.

    * created one table (search for "New codecs").

This fixes the charming, but unhelpful error message for
>>> pickle.dumps(type.__new__)
Can't pickle <built-in method __new__ of type object at 0x812a440>: it's not the same object as datetime.math.__new__

Bugfix candidate.

Bring idle.pyw into alignment with idle.py, eliminate calling deleted
module IdleConf.py

Bugfix candidate for 2.2.2.

because there test_grammar.py pulls them out of strings there.

(Same problem as last checkin for SF bug 610610)
Need to clear the error and proceed.

Backport candidate

failures on Windows.  Closes SF bug # 609988.

Removing config-mac.txt, not used in Idlefork

Missed adding "import types" while merging PyShell by hand....

The switch in Exception__str__ didn't clear the error if
PySequence_Size() raised an exception.  Added a case -1 which clears
the error and falls through to the default case.

Definite backport candidate (this dates all the way to Python 2.0).

Rev 1.4 fdrake
Use string.ascii_letters instead of string.letters (SF bug #226706)

Rev 1.5 doerwalter
(string methods)

Rev 1.6 GvR
Finally fix SF bug #441172, using a variant of patch ##443626:
canceling an edit operation would not revert the value of the field.
The fix takes care to destroy the Entry object, as suggested in the
patch.

Rev 1.7 Geiger Ho / GvR
(previously applied - Idlefork Rev 1.3)

Rev 1.8 doerwalter
(string methods)

Rev 1.3 nnorwitz
Remove unnecessary imports

Rev 1.17 doerwalter
(string methods)

Rev 1.3 doerwalter
(string methods)

Rev 1.2 doerwalter
(string methods)

Rev 1.3 tim_one
Convert a pile of obvious "yes/no" functions to return bool.

Rev 1.11 GvR
Fix for SF bug #448835.

Fix this to work with the new (still undocumented) tabnanny API.

I'm afraid Stephen will have to add this fix to the IDLE fork code
base as well.

Rev 1.12 rhettinger
(skip, done differently in Idlefork)

Rev 1.13 time_one
(skip, NA)

Rev 1.5 tim_one
Convert a pile of obvious "yes/no" functions to return bool

Rev 1.6 GvR
Rev 1.7 Gvr
(Already merged Idlefork ReplaceDialog.py 1.3.2.1 and 1.4)

Rev 1.8 doerwalter
(string methods)

Rev 1.9 nnorwitz
Remove unnecessary imports

Rev 1.35 fdrake
Use string.ascii_letters instead of string.letters (SF bug #226706).
Move computation of sets of characters out of the body of the function
that uses them.

Rev 1.36 tim_one
Convert a pile of obvious "yes/no" functions to return bool

Rev 1.37
(skip, done differently in Idlefork)

Rev 1.38 loewis
Patch #590913: PEP 263 support.

Rev 1.39 loewis
Convert characters from the locale's encoding on output.
Reject characters outside the locale's encoding on input.

Rev 1.40 doerwalter
(string methods)

Rev 1.41
(skipped, done by GvR in rpc)

preparation for ReST-ification of NEWS.  (Also tests checkin ability
from my new Powerbook.  woohoo!)

          being used to dump output (no seeks), so we can avoid a lot
          of extra checks being made.