On the 'windows_dirents' branch:

Fix bug where the empty path would be considered the ancestor of any path.

* subversion/libsvn_subr/path.c
  (svn_path_is_ancestor):
    Test for absoluteness using svn_dirent_is_absolute().

* subversion/tests/libsvn_subr/path-test.c
  (test_path_is_ancestor):
    Add corresponding test cases.

git-svn-id: https://svn.apache.org/repos/asf/subversion/branches/windows_dirents@873285 13f79535-47bb-0310-9956-ffa450edef68