We frequently check relative paths for being canonical.  Speed that up by minimizing the number of conditional jumps on the hot path.
We frequently check relative paths for being canonical.  Speed that up
by minimizing the number of conditional jumps on the hot path.

* subversion/libsvn_subr/dirent_uri.c
  (relpath_is_canonical): minimize number of conditions in while() loop


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@1485496 13f79535-47bb-0310-9956-ffa450edef68

YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion