[Ohrrpgce] SVN: teeemcee/10426 Finally fix Door.y being offset by 1! In fact, replace Door.x/y with Doo

[subversion at HamsterRepublic.com]

teeemcee
2018-06-19 06:25:25 -0700 (Tue, 19 Jun 2018)
204
Finally fix Door.y being offset by 1! In fact, replace Door.x/y with Door.pos

And in the process, I switched some other functions to take an XYPair too.
Lots of nice cleanup, especially in the map editor
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U   wip/game.bas
U   wip/game.bi
U   wip/loading.rbas
U   wip/mapsubs.bas
U   wip/scriptcommands.bas
U   wip/udts.bi