Make some fixes to trans_tests #9.
Make some fixes to trans_tests #9.

* subversion/tests/cmdline/trans_tests.py:
  (props_only_file_update): remove the keywords, rather than just changing
    them. this exercises a code path of "keywords exist" to "no keywords".
    also fix the testing of the content; just placing the intended content
    into the State wasn't getting it checked.

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