Add checking of recursive access to "svnauthz accessof".

* tools/server-side/svnauthz.c
  (options_table): Add -R.
  (struct svnauthz_opt_state): Add recursive member.
  (cmd_table): Add -R to accessof.
  (subcommand_accessof): Check recursive access if requested.
  (sub_main): Handle -R.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1449295 13f79535-47bb-0310-9956-ffa450edef68