Internal use only
Merge branch 'master' of https://github.com/eldardamari/operatingSystems
Merge branch 'master' of https://github.com/eldardamari/operatingSystems
ADDED - tasks 1.4, 1.5 1.6  where implemented
CREATED - testSignal.c program that tests all task 1
BUILD FIX - tasks 1.2 signal system call
ADDED - uthread lib
working on task3 -still in progress