Lab 2
Merge branch 'master' into lab2
Merge branch 'master' into lab2
Merge branch 'master' into lab2
Lab 2
Merge branch 'master' into lab2

Conflicts:
	kern/init.c
my solution for lab2 exercise 1
my solution for lab 2 for exercise 4
my solution for lab 2 exercise 5
Merge pull request #1 from amisharma/lab2

Lab2