issues/271: invoke custom emitters from forwarder, not agent, to capture statsd output
Add more memcached metrics: get_hit_percent, fill_percent, avg_item_size
issues/282: fixups for review comments

- Avoid using `%` for string formatting in log messages when this would
  force formatting for logs which aren't going to be printed.
- Avoid catching throwables not derived from Exception
- Avoid logging on ZeroDivisionError
consistent logging using centrally configured python logger
consistent logger naming
programmatically configure loggers to clear up logging config
deb packaging for new logging
clean up some py24 incompatiblities
rpm packaging for new logging
give pid files safe permissions. fixes #293.
don't log during 'info' command
show log locations in info command
version 3.5.0
clean up logging config
rotate logs
dump the vestigal 'get_logger_name()'
print the whole traceback when logging fails
syslog logging. on by default, and configurable.
show deprecation warning if old-style python logging config exists
rename 'logger' to 'log' for oli