Create backport branch for r947833 onto 1.6.x.


git-svn-id: https://svn.apache.org/repos/asf/subversion/branches/1.6.x-r947833@1461951 13f79535-47bb-0310-9956-ffa450edef68
Merge r947833 from trunk.

Dealt with conflicts in deadprops.c since the save_value function
has been refactored.


git-svn-id: https://svn.apache.org/repos/asf/subversion/branches/1.6.x-r947833@1461955 13f79535-47bb-0310-9956-ffa450edef68
Reintegrate the 1.6.x-r947833 branch:

 * r947833
   Remove deadprops rollback code.
   Justification:
     Fixes issue #3085, 2990
   Branch:
     ^/subversion/branches/1.6.x-r947833
   Votes:
     +1: breser, philip, cmpilato


git-svn-id: https://svn.apache.org/repos/asf/subversion/branches/1.6.x@1462312 13f79535-47bb-0310-9956-ffa450edef68