* tools/buildbot/slaves/bb-openbsd/svnclean.sh: Fix for 1.8.x, and also for
   1.9.x and 1.10.x so we won't have to fix it again for a couple of years.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1480688 13f79535-47bb-0310-9956-ffa450edef68