TAJO-1129: Remove hadoop 2.2.0 support. (jinho via hyunsik)

Closes #215
TAJO-1154: TajoCli doesn't pause while running the non-forwarded query. (Hyoungjun Kim via hyunsik)

Closes #227
Merge branch 'master' of http://git-wip-us.apache.org/repos/asf/tajo into index_support
Merge branch 'index_support' of https://git-wip-us.apache.org/repos/asf/tajo into TAJO-838_3