Fixed NLJ bug
Merge branch 'phase3_2014_4_22_YM' of https://github.com/akun1012/Minibase.git into phase3_2014_4_22_YM
INLJoins Done
Task 8 Partial Done
Merge branch 'phase3_2014_4_22_YM' of https://github.com/akun1012/Minibase.git into phase3_2014_4_22_YM