Fix bug in our release procedure docs.  Make them match reality.
Fix bug in our release procedure docs.  Make them match reality.

* HACKING
  (Stabilizing and maintaining releases):  describe what we actually do,
                    not what we thought we might do, way back when.

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion