Merged revisions 78719-78720 via svnmerge from

Merged revisions 78719-78720 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

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  r78719 | florent.xicluna | 2010-03-06 09:07:44 +0100 (sam, 06 mar 2010) | 3 lines

  Keep the test files in the ./build/ subdirectory, if Python is not installed.
  Remove two hacks which are no longer needed after #7712, because all __file__ attributes are absolute.
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  r78720 | florent.xicluna | 2010-03-06 10:11:55 +0100 (sam, 06 mar 2010) | 2 lines

  Print platform information to stdout, to help troubleshooting platform-specific failures.
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