Prototype WORKER_LAUNCH_PATTERN code
It's $params not %params (oops)
Preliminary (untested) prioritize jobs code
Merge branch 'unstable-2.7x' into x/feature-prioritize-jobs

Conflicts:
	lib/Helios/TheSchwartz.pm
Merge branch 'unstable-2.7x' into x/feature-worker-launch-pattern
Updated comments and copyright info.
Updated comments.
Merge branch 'x/feature-worker-launch-pattern' into unstable-2.7x

Conflicts:
	helios.pl
helios.pl: Fixed syntax error that snuck in during the merge.
Helios.pm, Helios::TheSchwartz.pm: Updated VERSION.
Updated Changes file with release info.