DBUS-332: Always copy the new distcp,messaging-client-core jars to make it available for the mapred jobs
Merge pull request #113 from rajubairishetti/2.3.4

DBUS-332: Always copy the new distcp,messaging-client-core jars to make it available to the mapped jobs
DBUS-315: read env file before checking the environment variables
Merge pull request #114 from rajubairishetti/2.3.4

DBUS-315: read env file before checking the environment variables
Merge pull request #115 from InMobi/2.3.4

Merge 2.3.4 to master