Update FAILGOAL to display line number of source if available.
Update FAILGOAL to display line number of source if available.

cygx/nqp,cygx/nqp,perl6/nqp-rx,cygx/nqp,perl6/nqp-rx,cygx/nqp,cygx/nqp,cygx/nqp,cygx/nqp,cygx/nqp