Revert r1485848 because it caused segfaults in 'svn diff' on a working
copy of Subversion's own trunk. The working copy is corrupted after
the crash, some working files contain binary garbage.

Also reported to dev@.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1486044 13f79535-47bb-0310-9956-ffa450edef68