Add as-soon-as-possible scheduling algorithm.  Refs #9042, #8982.
Add as-soon-as-possible scheduling algorithm.  Refs #9042, #8982.

ALAP with all starts changed to finish, successors change to
predecessors, etc.

git-svn-id: 2159781fc7c14c6bdd1f7e265daf7a25099c31e7@10692 7322e99d-02ea-0310-aa39-e9a107903beb

trac-hacks/trac-jsGantt,trac-hacks/trac-jsGantt,trac-hacks/trac-jsGantt