Make it easier to track down a keyword mismatch error by printing the index into the keyword list that failed the match.
Make it easier to track down a keyword mismatch error by printing the
index into the keyword list that failed the match.

* subversion/tests/cmdline/trans_tests.py
  (check_keywords):
    Print the keyword number that failed.

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