Merged revisions 75255 via svnmerge from

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

........
  r75255 | r.david.murray | 2009-10-05 13:03:09 -0400 (Mon, 05 Oct 2009) | 3 lines

  Issue #7058: Added save/restore for argv and os.environ to runtest_inner
  in regrtest, with warnings if the called test modifies them.
........