[Ohrrpgce] SVN: teeemcee/9515 Add a whole heap of testcases for "check wall collision x/y", which trig

[subversion at HamsterRepublic.com]

teeemcee
2017-09-29 09:51:28 -0700 (Fri, 29 Sep 2017)
288
Add a whole heap of testcases for "check wall collision x/y", which trigger the pass-through-walls bug

This doesn't even test every edge case. And I didn't even add any tests for
"move slice with wallchecking". Or for map wrapping

And a tiny error-checking addition to wall_collider.rpg
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U   wip/testgame/autotest.hss
U   wip/testgame/autotest.rpg
U   wip/testgame/wall_collider.hss
U   wip/testgame/wall_collider.rpg