Triple the performance of our URI escapement code when applied to already valid input.  This function is at the core of svn_path_url_add_component2(), which in turn is called all over the place.
Triple the performance of our URI escapement code when applied to already
valid input.  This function is at the core of svn_path_url_add_component2(),
which in turn is called all over the place.

* subversion/libsvn_subr/path.c
  (uri_escape): Delay any escapement overhead until we find the first
                character that needs escaping.

git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@1710099 13f79535-47bb-0310-9956-ffa450edef68

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