Mining code cleanup.
Merge remote-tracking branch 'origin/Bleeding-Edge' into MiningPicks
Map changes + changelog.
DME fix.
DME fix 2: fix more.
Fixed wall code.
Falserwall error.
Fix Gibtonite passive sprite.
Fix compile error.
Fixed station alert computers
changelog
Merge conflicts.
Nerf Firebird
 - Firebird can no longer go through walls (server vote 10-7)
 - Firebird now leaves fire trails in space.
 - Slightly re-organized jetpack code.
Changelog
Fixes strip layers.
Gave Strange Rock Own Class, Not an Ore
Replace with a cool proc.
Fix cult summon spam.
Merge pull request #2245 from ComicIronic/StripFix

Fixes stripped items appearing above sight overlays
Added span to MMI/Posibrain, MMI examine()