PDI-11306: Initial mapr31 shim
[PDI-11036]: FileSystem.isDirectory() is deprecated.  Use isDir().  Fixes two failing test cases.  Fixed packaging path in several places.  Added mapr31 to build list. Updated mapr31 jars.
[PDI-11306] - updated build.properties to reflect TRUNK-SNAPSHOT instead of 5.0-SNAPSHOT
[PDI-11306] - add mapr31 back in shim-non-api-modules (merge conflict). Fix hbaseShimRegistered() test
Merge pull request #82 from pentaho-skarmali/PDI-11306_mapr31

[PDI-11306] Dev work for MapR 3.1 for 5.1/trunk