Properly escape regular expressions in tree-conflict tests. They were failing on Windows with paths with backslashes in them.
Properly escape regular expressions in tree-conflict tests. They were failing
on Windows with paths with backslashes in them.

* subversion/tests/cmdline/tree_conflict_tests.py
  (ensure_tree_conflict): Escape the path string when embedding it in a
    regular expression.

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