1. Added long options to sge_submit_workers to match those in the work_queue_worker.
2. Updated the man page and the help message to reflect the changes.

Similar to changes made to the condor_submit_workers recently:
1. the -c option (added for the --cores options) was removed;
2. long options using equal signs won't work in sge_submit_workers either, e.g.: '--timeout=30'. A valid one would be: '--timeout 30'