Ensure that nothing is lost in some deprecated svn_path_* functions by more-or-less restoring their implementations to their pre-lets-go-muck-with-everything-path-related state.  The further we differentiate svn_uri_* functions, the more absurd it is to assume that they can be used in anything that resembles a generic fashion.
Ensure that nothing is lost in some deprecated svn_path_* functions by
more-or-less restoring their implementations to their
pre-lets-go-muck-with-everything-path-related state.  The further
we differentiate svn_uri_* functions, the more absurd it is to assume
that they can be used in anything that resembles a generic fashion.

* subversion/libsvn_subr/path.c
  (get_path_ancestor_length): Restore this function from it's 1.5.x glory.
  (svn_path_get_longest_ancestor): Rather than dumping everything on
    the svn_uri_* functions, revert to 1.5.x's approach (while still
    using svn_uri_get_longest_ancestor() where URLs are concerned).
  (svn_path_is_child, svn_path_is_ancestor): Revert to 1.5.x code.

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