Make branch to backport issue #4400 to 1.8.x


git-svn-id: https://svn.apache.org/repos/asf/subversion/branches/1.8.x-issue4400@1507591 13f79535-47bb-0310-9956-ffa450edef68
On the 1.8.x-issue4400 branch, merge r1507567 and r1507589 from trunk.

Only a minor conflict in commit_tests.py due to a test on trunk that isn't on
1.8.x


git-svn-id: https://svn.apache.org/repos/asf/subversion/branches/1.8.x-issue4400@1507594 13f79535-47bb-0310-9956-ffa450edef68
On the 1.8.x-issue4400 branch merge r1512195 from trunk.


git-svn-id: https://svn.apache.org/repos/asf/subversion/branches/1.8.x-issue4400@1512198 13f79535-47bb-0310-9956-ffa450edef68
Merge the 1.8.x-issue4400 branch:

 * r1507567, r1507589, r1512195
   Fix issue #4400: crash when committing cp with deep deletion.
   Branch:
     ^/subversion/branches/1.8.x-issue4400
   Justification:
     SEGV and Regression from 1.7.
   Votes:
     +1: breser, danielsh, ivan


git-svn-id: https://svn.apache.org/repos/asf/subversion/branches/1.8.x@1512558 13f79535-47bb-0310-9956-ffa450edef68