Don't compile a few functions when they aren't needed.
Don't compile a few functions when they aren't needed.

* subversion/libsvn_ra_serf/auth.c
  (handle_proxy_basic_auth, init_proxy_basic_connection,
   setup_request_proxy_basic_auth, default_auth_response_handler):
    Wrap with a #define to ensure they aren't compiled when never referenced.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@964447 13f79535-47bb-0310-9956-ffa450edef68

YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,wbond/subversion,wbond/subversion