Fix up the rendering of gui engines. Closes #708
Fix up for liquidstack immutability
Fix up engineiron to use the new tank persistence methods
Fix trigger/action rendering
Fix lasers
Fix filler GUI and world rendering
Fix oil, fuel, quarry and pump
Revert experimental pipe flow changes
Merge remote-tracking branch 'remotes/upstream/mc1.5' into 1.5

Conflicts:
	common/buildcraft/core/EntityRobot.java
Removed debug output
Fixed up build.config
Updated forge version
buildscript will now use a git describe to get a version
Merge remote-tracking branch 'remotes/upstream/mc1.5' into 1.5

Conflicts:
	build.xml