ZAS fixes, implements multi-tile doors (That work perfectly!)
That multi-tile firedoor needs love.  Lots of love. (It is missing a lot of icon states)
Forgot the files, doh!
Merge pull request #3150 from SkyMarshal/master

ZAS fixes, implements multi-tile doors (That work perfectly!)
Merge pull request #3155 from Zuhayr/master

Bug fixes.
Fixes #3145
Fixes #2815
Fixes #3146
Fixes #3154
Merge pull request #3159 from Zuhayr/master

AIize() runtime fix.