java/jboss72: distfile rerolled and enhance rc script

Distfile was rerolled, maintainer has checked that there are no spurious changes

RC script now can be tuned to hard way kill stuck JBoss or any child
processes preventing restart; RC script can be configured to make a
delay after killing (for example for restart).

Add LICENSE info.

PR: ports/178142
Submitted by: Alexander Yerenkow <yerenkow@gmail.com> (maintainer)