Critical community-submitted bugfix

Users will build crazy stuff, so we have to immunise this as best as possible.

http://resonant-rise.com/forums/topic/1389-universal-cable-and-rednet-cable-logic-loop/
Updated MapWriter
Restored Tubes because lol Dave tears etc.
RR 2.4.11-PRER XML

Dave wants to pop a release and CoFH are dragging their heels so why the hell not?