[Ohrrpgce] SVN: james/8856 rename "cancel npc movement override" to "cancel npc walk"

[subversion at HamsterRepublic.com]

james
2017-06-09 15:26:23 -0700 (Fri, 09 Jun 2017)
150
rename "cancel npc movement override" to "cancel npc walk"
(it doesn't cancel "walk npc" just yet, but that is coming soon.)
Add a map for testing it
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U   wip/plotscr.hsd
U   wip/scriptcommands.bas
U   wip/testgame/a-star.hss
U   wip/testgame/a-star.rpg