initial assignment2 commit - new files copied from assignment1
commit before merge - setting up assignment folders
merege confilicts
ADDED: section 1.2 -> add signal system call.
add support in system calls signal and sigsend - tested and ok
2/1.1 2/1.2 2/1.3 - done , 2/1.4 - see notes on proc.c line 318, 2/1.5 - done
Merge branch 'master' of https://github.com/eldardamari/operatingSystems