To pull
Merge branch 'master' of git@github.com:huypham612/cse131_winter14.git

Conflicts:
	Makefile
Merge branch 'master' of git@github.com:huypham612/cse131_winter14.git
Push Uninitialized variables test on bool, int, float
Merge branch 'master' of git@github.com:huypham612/cse131_winter14.git
Merge branch 'master' of git@github.com:huypham612/cse131_winter14.git
Test on const folding with miltiple operations