This change addresses part of issue 4336.

Change endheaders() to take an optional message_body argument
that is sent along with the headers.  Change xmlrpclib and
httplib's other methods to use this new interface.

It is more efficient to make a single send() call, which should
get the entire client request into one packet (assuming it is
smaller than the MTU) and will avoid the long pause for delayed
ack following timeout.

Also:
- Add a comment about the buffer size for makefile().
- Extract _set_content_length() method and fix whitespace issues there.

Otherwise, you get a warning about an undefined variable.

Merged revisions 67384,67386-67387,67389-67390,67392,67399-67400,67403-67405,67426 via svnmerge from
svn+ssh://pythondev@svn.python.org/sandbox/trunk/2to3/lib2to3

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  r67384 | benjamin.peterson | 2008-11-25 16:13:31 -0600 (Tue, 25 Nov 2008) | 4 lines

  don't duplicate calls to start_tree()

  RefactoringTool.pre_order values now holds a list of the fixers while pre_order_mapping holds the dict.
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  r67386 | benjamin.peterson | 2008-11-25 16:44:52 -0600 (Tue, 25 Nov 2008) | 1 line

  #4423 fix_imports was still replacing usage of a module if attributes were being used
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  r67387 | benjamin.peterson | 2008-11-25 16:47:54 -0600 (Tue, 25 Nov 2008) | 1 line

  fix broken test
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  r67389 | benjamin.peterson | 2008-11-25 17:13:17 -0600 (Tue, 25 Nov 2008) | 1 line

  remove compatibility code; we only cater to 2.5+
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  r67390 | benjamin.peterson | 2008-11-25 22:03:36 -0600 (Tue, 25 Nov 2008) | 1 line

  fix #3994; the usage of changed imports was fixed in nested cases
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  r67392 | benjamin.peterson | 2008-11-26 11:11:40 -0600 (Wed, 26 Nov 2008) | 1 line

  simpilfy and comment fix_imports
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  r67399 | benjamin.peterson | 2008-11-26 11:47:03 -0600 (Wed, 26 Nov 2008) | 1 line

  remove more compatibility code
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  r67400 | benjamin.peterson | 2008-11-26 12:07:41 -0600 (Wed, 26 Nov 2008) | 1 line

  set svn:ignore
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  r67403 | benjamin.peterson | 2008-11-26 13:11:11 -0600 (Wed, 26 Nov 2008) | 1 line

  wrap import
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  r67404 | benjamin.peterson | 2008-11-26 13:29:49 -0600 (Wed, 26 Nov 2008) | 1 line

  build the fix_imports pattern in compile_pattern, so MAPPING can be changed and reflected in the pattern
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  r67405 | benjamin.peterson | 2008-11-26 14:01:24 -0600 (Wed, 26 Nov 2008) | 1 line

  stop ugly messages about runtime errors being from printed
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  r67426 | benjamin.peterson | 2008-11-28 16:01:40 -0600 (Fri, 28 Nov 2008) | 5 lines

  don't replace a module name if it is in the middle of a attribute lookup

  This fix also stops module names from being replaced if they are not in an attribute lookup.
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Retain copyright of processing examples. This was requested by a Debian maintainer during packaging of the multiprocessing package for 2.4/2.5

svn+ssh://pythondev@svn.python.org/sandbox/trunk/2to3/lib2to3

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  r67183 | benjamin.peterson | 2008-11-10 21:51:33 -0600 (Mon, 10 Nov 2008) | 1 line

  handle 'import x as y' in fix_imports; this still needs more work...
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  r67191 | benjamin.peterson | 2008-11-11 17:24:51 -0600 (Tue, 11 Nov 2008) | 1 line

  super() is good
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  r67371 | benjamin.peterson | 2008-11-24 16:02:00 -0600 (Mon, 24 Nov 2008) | 1 line

  don't blow up in the metaclass fixer when assignments in the class statement aren't simple
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class.

These methods can be overridden.  The tests verify that the overridden
methods are called, and that changes to the connection have a visible
effect on the request.

   always be present (non UNIX dependent)"

stack overflow. But doing this, it always crashes when the stack is nearly full.

Reviewed by Martin von Loewis. Will backport to 2.6.

and certainly not useful for any Windows build.

Fixes #4367

Will backport to 2.6

Changed semantic of _fileio.FileIO's close()  method on file objects with closefd=False.
The file descriptor is still kept open but the file object behaves like a closed file.
The FileIO  object also got a new readonly attribute closefd.

Approved by Barry

Backport of r67106 from the py3k branch

Fixes #4348
Reviewed by Brett