[PDI-11306] MapR 3.1 Shim Support

This is the initial pull request for the MapR 3.1 Shim for 5.0 branch (to be forward ported to 5.1).

1) Initial codebase from MapR 3.0
2) isDirectory() is deprecated.  Use isDir().
3) Updated MapR 3.1 based jars (based from mapr-1401-140130)
4) Ivy changes and build infra-structure.
5) Added new pig jar dependencies