Update LWJGL to 3.1.6.

Also there is a bug in the context creation. The if the context is re-created at any point, it will crash. This is due to adding the error listener to GLWF that has already been freed but the pointer still exists in GLWF. This is reproducible always when running the examples with the example chooser and choosing i.e. BrickWall. First time ok, second time crash.