Applied patch 1124861.3.patch to solve bug #1124861: Automatically create pipes on Windows, if GetStdHandle fails. Backport from rev 53646.

the master should close the slave fd.

Added a test to test_pty.py that reads from the master_fd after doing
a pty.fork(); without the fix it hangs forever instead of raising an
exception.  (<crossing fingers for the buildbots>)

Backport from trunk rev. 53146.

 (backport from rev. 53603)

 (backport from rev. 53579)

a with statement; previously, executing code containing a with statement
compiled by the compiler package crashed the interpreter.
 (backport from rev. 53575)

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

........
  r53556 | thomas.heller | 2007-01-25 19:34:14 +0100 (Do, 25 Jan 2007) | 3 lines

  Fix for #1643874: When calling SysAllocString, create a PyCObject
  which will eventually call SysFreeString to free the BSTR resource.
........

segfault the interpreter during weakref clean up.  Now any new weakrefs created
after __del__ is run are removed silently.

Fixes bug #1377858 and the weakref_in_del crasher for new-style classes.
Classic classes are still affected.

frame's thread state. Fixes #1579370.

SF patch #1630975: Fix crash when replacing sys.stdout in sitecustomize

When running the interpreter in an environment that would cause it to set
stdout/stderr/stdin's encoding, having a sitecustomize that would replace
them with something other than PyFile objects would crash the interpreter.
Fix it by simply ignoring the encoding-setting for non-files.

This could do with a test, but I can think of no maintainable and portable
way to test this bug, short of adding a sitecustomize.py to the buildsystem
and have it always run with it (hmmm....)

 (backport from rev. 53524)

 (backport from rev. 53522)

[Bug #1552726] Avoid unnecessary polling at the interpreter prompt when certain versions of readline are being used

 (backport from rev. 53511)

types.
 (backport from rev. 53509)

be true if we didn't malloc the code?  Seems like the code is wrong
or could use comments.

Also verify if the buildbots are working properly for the 2.5 branch.

 (backport from rev. 53477)

 (backport from rev. 53475)

[Part of bug #1599254] Add suggestion to Mailbox docs to use Maildir, and warn user to lock/unlock mailboxes when modifying them