* tools/dev/unix-build/Makefile.svn: In my custom build script,
   which is also used by the bb-openbsd buildbot, enable APR pool
   debugging by default. I hope this will help the bb-openbsd
   buildbot with flagging memory management bugs.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1585841 13f79535-47bb-0310-9956-ffa450edef68