Fix "svn_ra_get_path_relative_to_session undefined" link error.
Fix "svn_ra_get_path_relative_to_session undefined" link error.

* build.conf(client-test): Add libsvn_ra to libs.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@880478 13f79535-47bb-0310-9956-ffa450edef68

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