Fleshing out the proc.c. Added some of the function meat. Need to know if when sem_destroy is called if all the waiting processes are woken up
Fleshing out the proc.c. Added some of the function meat. Need to know if when sem_destroy is called if all the waiting processes are woken up

CHRISTOPHERDIEHL/xv6,CHRISTOPHERDIEHL/xv6,CHRISTOPHERDIEHL/xv6,CHRISTOPHERDIEHL/xv6