[Ohrrpgce] SVN: james/10211 NPC pathfinding cooldown is not used when the NPC has a stop_after_still

[subversion at HamsterRepublic.com]

james
2018-03-26 15:16:24 -0700 (Mon, 26 Mar 2018)
268
NPC pathfinding cooldown is not used when the NPC has a stop_after_stillticks timeout

This allows stop_after_stillticks to be a precise number of ticks.
Without this fix, stop_after_stillticks only worked accurately for even multiples of the cooldown delay (10 ticks)
---
U   wip/game.bas
U   wip/testgame/autotest.hss
U   wip/testgame/autotest.rpg