Improve error message for 'svn move'.
Improve error message for 'svn move'.

* subversion/libsvn_client/copy.c
  (setup_copy): Improve error message used when a repository -> WC
   move is attempted.

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion