Re-using sneak keybind for extended tooltip to avoid conflict.
Added bluescreens (show error on crash on installed GPUs' screen).
Merge branch 'master' of github.com:MightyPirates/OpenComputers into MC1.7

Conflicts:
	src/main/scala/li/cil/oc/client/KeyBindings.scala
	src/main/scala/li/cil/oc/util/ItemCosts.scala