Updated MetaStation.v39A.II.dmm to MetaStation.v39A.III.dmm

*Added missing air alarm to the bar.
*Updated mining and stacker machines to use new input/output vars.
*Changed tiles in hydroponics to grey from white.
*Made the toxins test site camera give off light.
*Adjusted tile colours on the main hallways slightly.
*Adjusted securitron waypoints so they no longer travel through the execution chamber.
*Fixed privacy shutter on the firing range appearing above grille.
*Fixed unnecessary reinforced table in botany.
*Other small fixes.

Full image: https://dl.dropboxusercontent.com/u/858120/Static/SS13/MetaStation/14-01-06%20MSv39AIII%20Full.png

It appears there's a merge issue, how do I find out why?