Upgrade our tools from the deprecated svn_ver_check_list to using
svn_ver_check_list2.

* tools/client-side/svn-bench/svn-bench.c
  (check_lib_versions): upgrade to newest version check API

* tools/dev/svnraisetreeconflict/svnraisetreeconflict.c
  (check_lib_versions): ditto

* tools/server-side/svn-rep-sharing-stats.c
  (check_lib_versions): ditto

git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1511312 13f79535-47bb-0310-9956-ffa450edef68