Merged revisions 79077,79137,79304-79305 via svnmerge from

Merged revisions 79077,79137,79304-79305 via svnmerge from
svn+ssh://pythondev@svn.python.org/sandbox/trunk/2to3/lib2to3

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  r79077 | benjamin.peterson | 2010-03-18 18:05:29 -0500 (Thu, 18 Mar 2010) | 1 line

  port detect_encoding improvements from py3k
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  r79137 | benjamin.peterson | 2010-03-20 11:12:53 -0500 (Sat, 20 Mar 2010) | 1 line

  add a fixer for setting sys.exitfunc #2356
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  r79304 | benjamin.peterson | 2010-03-22 17:20:22 -0500 (Mon, 22 Mar 2010) | 1 line

  fix test_parser when it's run in a path with spaces #7666
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  r79305 | benjamin.peterson | 2010-03-22 17:27:07 -0500 (Mon, 22 Mar 2010) | 1 line

  normalize whitespace
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