* subversion/libsvn_client/diff.c:   (diff_content_changed): Mark path as visited if diffed by external tool.    Fixes duplicate occurrences of Index: lines.
* subversion/libsvn_client/diff.c:
  (diff_content_changed): Mark path as visited if diffed by external tool.
   Fixes duplicate occurrences of Index: lines.

Patch by: Alexey Neyman <stilor@att.net>

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion