cli_set_process_title() available in PHP 5.5 to set proc title. This is preferred over the PECL function setproctitle().
refactor process title to keep it DRY
fix spaces that should be tabs
Merge pull request #131 from richardkmiller/updateProcLine-php5.5

Let Resque_Worker::updateProcLine() use PHP 5.5's cli_set_process_title() if available