Add option parsing, including rotating log files.
Add option parsing, including rotating log files.

* tools/server-side/svnpubsub/svnwcsub.py:
  (prepare_logging): new helper function to prepare the Python logging
    framework to write content to LOGFILE.
  (handle_options): new function to handle all the command-line options
  (main): take cmdline args rather than a config file. set up an
    option parser and process the given args.

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