Make update test 39 only work when the server really sends copyfrom-info.
Make update test 39 only work when the server really sends copyfrom-info.

* subversion/tests/cmdline/update_tests.py
  (update_handles_copyfrom_with_txdeltas):  add a local mod & merge to the mix.

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