TAJO-995: HiveMetaStoreClient wrapper should retry the connection
Merge branch 'master' of https://git-wip-us.apache.org/repos/asf/tajo
Merge branch 'master' of https://git-wip-us.apache.org/repos/asf/tajo
Merge branch 'master' of https://git-wip-us.apache.org/repos/asf/tajo
Merge branch 'master' of https://git-wip-us.apache.org/repos/asf/tajo
Merge branch 'master' of https://git-wip-us.apache.org/repos/asf/tajo
Merge branch 'master' of https://git-wip-us.apache.org/repos/asf/tajo
Merge branch 'master' of https://git-wip-us.apache.org/repos/asf/tajo
TAJO-667: Add math function documentation. (Jongyoung Park via hyunsik)

Closes #153
Merge remote-tracking branch 'upstream/master' into TAJO-235
Merge branch 'master' of https://git-wip-us.apache.org/repos/asf/tajo
TAJO-1062: Update TSQL documentation
TAJO-1025: Network disconnection during query processing can cause infinite exceptions. (Jihun Kang via jinho)
TAJO-983: Worker should directly read Intermediate data stored in localhost rather than fetching. (Mai Hai Thanh via hyunsik)
TAJO-1070: BSTIndexScanExec should not seek a negative offset. (jinho)

Closes #159
TAJO-1060: Apply updated hadoop versions to README and BUILDING files. (jinho)

Closes #158
TAJO-1061: Update build documentation. (jaehwa)

Closes #157
Update tsql documentation.
Merge branch 'master' of https://git-wip-us.apache.org/repos/asf/tajo into TAJO-1062
Update some typos