Blocked revisions 79938,79949 via svnmerge

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  r79938 | antoine.pitrou | 2010-04-10 18:32:12 -0500 (Sat, 10 Apr 2010) | 3 lines

  Revert temporary commit in r79937
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  r79949 | raymond.hettinger | 2010-04-11 03:14:45 -0500 (Sun, 11 Apr 2010) | 1 line

  Add descriptor howto to main documentation
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