[Ohrrpgce] SVN: james/8796 When a pathfiding attempt fails, return a path to the closest node from

[subversion at HamsterRepublic.com]

james
2017-06-02 08:10:15 -0700 (Fri, 02 Jun 2017)
324
When a pathfiding attempt fails, return a path to the closest node from the "closed" list as a consolation destination.

Also added a .consolation flag to the AStarPathfinder object for more convenient detection of such results rather than
having to compare the last element of the result path with your requested dest pos.
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U   wip/pathfinding.bas
U   wip/pathfinding.bi
U   wip/testgame/a-star.rpg