alley monitor solution

This was much easier to do than with semaphores.
barrier monitor solution
resolve conflict
remove try...catch from monitor solution
fix carRemove for first car in alley queue
attempt at fair alley monitor (can deadlock!)
possible fair alley monitor deadlock solution
ignore gspin output
Merge branch 'semaphore' of github.com:futek/cars into semaphore

Conflicts:
	src/Alley.java