Updated Project Red dependency because old maven is apparently not used anymore.
Fixed robots vanishing when broken by AE2 annihilation planes. Closes #722.
Fixed potential NPE in robot use logic (if robot.use() resulted in a new stack appearing in the robot's tool slot).
Added extra check to robots' setInventorySlotContents, drop into world if slot is invalid for item.
Merge branch 'master-MC1.7.10' of github.com:MightyPirates/OpenComputers into master-MC1.7.10