Merged revisions 66809-66810,66835,66862-66863 via svnmerge from

Merged revisions 66809-66810,66835,66862-66863 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

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  r66809 | hirokazu.yamamoto | 2008-10-06 10:57:03 +0900 | 1 line

  Added the test for issue3762.
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  r66810 | hirokazu.yamamoto | 2008-10-06 11:41:59 +0900 | 1 line

  More strict test. Consider the case sys.executable itself is symlink.
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  r66835 | hirokazu.yamamoto | 2008-10-08 03:10:47 +0900 | 1 line

  more intensive test on dbm.
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  r66862 | hirokazu.yamamoto | 2008-10-09 19:00:30 +0900 | 3 lines

  On windows, os.chdir given unicode was not working if GetCurrentDirectoryW
  returned a path longer than MAX_PATH. (But It's doubtful this code path is
  really executed because I cannot move to such directory on win2k)
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  r66863 | hirokazu.yamamoto | 2008-10-09 19:11:21 +0900 | 1 line

  r66862 contained memory leak.
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