Remove the use of a deprecated API.
Remove the use of a deprecated API.

* subversion/libsvn_client/log.c
  (copyfrom_info_receiver): Update to implement svn_log_entry_receiver_t.
  (svn_client__get_copy_source): Use svn_client_log4() instead of
   svn_client_log3().


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@869328 13f79535-47bb-0310-9956-ffa450edef68

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