Merged revisions 85646 via svnmerge from

Merged revisions 85646 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/branches/py3k

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  r85646 | gregory.p.smith | 2010-10-17 11:38:04 -0700 (Sun, 17 Oct 2010) | 6 lines

  * Applys part of the patch from http://bugs.python.org/issue3631 to add
    a py_decref macro, fixup the pyo macro and reuse it and avoid a memory
    leak introduced by the pylocals macro.
  * Adds a note about gdb 7 python debugging support with links for
    more info on that.
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