replacing warnings.formatwarnings and to reverse replacement of
warnings.showwarnings when import is complete and when main function exits.
Add test_warning.py. Vinay Sajip provided capture_warnings function.

If buildbots run before next push, test_logging will (temporarily) fail.

"import idlelib" should not install hooks on the warning modules, hooks should
only be installed when IDLE is started.

when running scripts that terminated by raising SystemExit
(i.e. unittest and turtledemo).

interface and support all mandatory methods and properties.

interface and support all mandatory methods and properties.

Patch by Roger Serwy and myself.

Patch by Roger Serwy and myself.

  without mainloop.

  Thanks to Roger Serwy for patch.

UnicodeEncodeError is raised for strings contains non-BMP characters.
For eval results unicode escaping is used, print() calls display
exception with traceback as usual.

svn+ssh://pythondev@svn.python.org/python/trunk

........
  r79576 | florent.xicluna | 2010-04-02 10:24:52 +0300 (Fri, 02 Apr 2010) | 2 lines

  #7092: Fix additional "-3" warnings in the idlelib package, and convert to absolute imports.
........
  r79577 | florent.xicluna | 2010-04-02 11:15:26 +0300 (Fri, 02 Apr 2010) | 2 lines

  #7092: Drop the cmp argument.
........
  r79578 | florent.xicluna | 2010-04-02 11:30:21 +0300 (Fri, 02 Apr 2010) | 2 lines

  #7092: silence some py3k warnings
........

svn+ssh://pythondev/python/trunk

........
  r74446 | guilherme.polo | 2009-08-14 10:53:41 -0300 (Fri, 14 Aug 2009) | 1 line

  Issue #3344: Replace itertools.count by enumerate.
........
  r74447 | guilherme.polo | 2009-08-14 11:03:07 -0300 (Fri, 14 Aug 2009) | 1 line

  Issue #3926: Fix the usage of the new showwarnings and formatwarning.
........
  r74448 | guilherme.polo | 2009-08-14 11:36:45 -0300 (Fri, 14 Aug 2009) | 3 lines

  Issue #1135: Add the XView and YView mix-ins to avoid duplicating
  the xview* and yview* methods.
........
  r74449 | guilherme.polo | 2009-08-14 11:43:43 -0300 (Fri, 14 Aug 2009) | 1 line

  Clarifying Entry.selection_present's docstring.
........

svn+ssh://pythondev@svn.python.org/python/trunk

........
  r71023 | kurt.kaiser | 2009-04-01 22:44:54 -0400 (Wed, 01 Apr 2009) | 3 lines

  Remove port spec from run.py and fix bug where
  subprocess fails to extract port from command line
  when warnings are present.
........

subprocess fails to extract port from command line
when warnings are present.

Seen when setting RPCHandler.debugging=True

Python 3.0 clears the exception variable upon exit of the "except:" clause,
and the displaying code fails miserably.

Reviewed by Benjamin.

Merged revisions 66887,66891,66902-66903,66905-66906,66911-66913,66922,66927-66928,66936,66939-66940,66962,66964,66973 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

................
  r66887 | benjamin.peterson | 2008-10-13 16:51:40 -0500 (Mon, 13 Oct 2008) | 1 line

  document how to disable fixers
................
  r66891 | amaury.forgeotdarc | 2008-10-14 16:47:22 -0500 (Tue, 14 Oct 2008) | 5 lines

  #4122: On Windows, Py_UNICODE_ISSPACE cannot be used in an extension module:
  compilation fails with "undefined reference to _Py_ascii_whitespace"

  Will backport to 2.6.
................
  r66902 | skip.montanaro | 2008-10-15 06:49:10 -0500 (Wed, 15 Oct 2008) | 1 line

  easter egg
................
  r66903 | benjamin.peterson | 2008-10-15 15:34:09 -0500 (Wed, 15 Oct 2008) | 1 line

  don't recurse into directories that start with '.'
................
  r66905 | benjamin.peterson | 2008-10-15 16:05:55 -0500 (Wed, 15 Oct 2008) | 1 line

  support the optional line argument for idle
................
  r66906 | benjamin.peterson | 2008-10-15 16:58:46 -0500 (Wed, 15 Oct 2008) | 1 line

  add a much requested newline
................
  r66911 | benjamin.peterson | 2008-10-15 18:10:28 -0500 (Wed, 15 Oct 2008) | 41 lines

  Merged revisions 66805,66841,66860,66884-66886,66893,66907,66910 via svnmerge from
  svn+ssh://pythondev@svn.python.org/sandbox/trunk/2to3/lib2to3

  ........
    r66805 | benjamin.peterson | 2008-10-04 20:11:02 -0500 (Sat, 04 Oct 2008) | 1 line

    mention what the fixes directory is for
  ........
    r66841 | benjamin.peterson | 2008-10-07 17:48:12 -0500 (Tue, 07 Oct 2008) | 1 line

    use assertFalse and assertTrue
  ........
    r66860 | benjamin.peterson | 2008-10-08 16:05:07 -0500 (Wed, 08 Oct 2008) | 1 line

    instead of abusing the pattern matcher, use start_tree to find a next binding
  ........
    r66884 | benjamin.peterson | 2008-10-13 15:50:30 -0500 (Mon, 13 Oct 2008) | 1 line

    don't print tokens to stdout when -v is given
  ........
    r66885 | benjamin.peterson | 2008-10-13 16:28:57 -0500 (Mon, 13 Oct 2008) | 1 line

    add the -x option to disable fixers
  ........
    r66886 | benjamin.peterson | 2008-10-13 16:33:53 -0500 (Mon, 13 Oct 2008) | 1 line

    cut down on some crud
  ........
    r66893 | benjamin.peterson | 2008-10-14 17:16:54 -0500 (Tue, 14 Oct 2008) | 1 line

    add an optional set literal fixer
  ........
    r66907 | benjamin.peterson | 2008-10-15 16:59:41 -0500 (Wed, 15 Oct 2008) | 1 line

    don't write backup files by default
  ........
    r66910 | benjamin.peterson | 2008-10-15 17:43:10 -0500 (Wed, 15 Oct 2008) | 1 line

    add the -n option; it stops backupfiles from being written
  ........
................
  r66912 | hirokazu.yamamoto | 2008-10-16 01:25:25 -0500 (Thu, 16 Oct 2008) | 2 lines

  removed unused _PyUnicode_FromFileSystemEncodedObject.
  made win32_chdir, win32_wchdir static.
................
  r66913 | benjamin.peterson | 2008-10-16 13:52:14 -0500 (Thu, 16 Oct 2008) | 1 line

  document that deque indexing is O(n) #4123
................
  r66922 | benjamin.peterson | 2008-10-16 14:40:14 -0500 (Thu, 16 Oct 2008) | 1 line

  use new showwarnings signature for idle #3391
................
  r66927 | andrew.kuchling | 2008-10-16 15:15:47 -0500 (Thu, 16 Oct 2008) | 1 line

  Fix wording (2.6.1 backport candidate)
................
  r66928 | georg.brandl | 2008-10-16 15:20:56 -0500 (Thu, 16 Oct 2008) | 2 lines

  Add more TOC to the whatsnew index page.
................
  r66936 | georg.brandl | 2008-10-16 16:20:15 -0500 (Thu, 16 Oct 2008) | 2 lines

  #4131: FF3 doesn't write cookies.txt files.
................
  r66939 | georg.brandl | 2008-10-16 16:36:39 -0500 (Thu, 16 Oct 2008) | 2 lines

  part of #4012: kill off old name "processing".
................
  r66940 | georg.brandl | 2008-10-16 16:38:48 -0500 (Thu, 16 Oct 2008) | 2 lines

  #4083: add "as" to except handler grammar as per PEP 3110.
................
  r66962 | benjamin.peterson | 2008-10-17 15:01:01 -0500 (Fri, 17 Oct 2008) | 1 line

  clarify CALL_FUNCTION #4141
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  r66964 | georg.brandl | 2008-10-17 16:41:49 -0500 (Fri, 17 Oct 2008) | 2 lines

  Fix duplicate word.
................
  r66973 | armin.ronacher | 2008-10-19 03:27:43 -0500 (Sun, 19 Oct 2008) | 3 lines

  Fixed #4067 by implementing _attributes and _fields for the AST root node.
................

svn+ssh://pythondev@svn.python.org/python/trunk

........
  r66922 | benjamin.peterson | 2008-10-16 14:40:14 -0500 (Thu, 16 Oct 2008) | 1 line

  use new showwarnings signature for idle #3391
........