kiji-schema: SCHEMA-693.  Move classes from impl to impl.hbase.

This refactoring already happened in the Cassandra branch.  Doing this
on master now to make eventual merge with Cassandra easier.

Some classes / interfaces we did not move yet to impl.hbase because they
get used in fake HBase - we will refactor these later, when we do
modifications to other projects.

review: https://review.kiji.org/r/1759
issue: https://jira.kiji.org/SCHEMA-693
commit: https://github.com/kijiproject/kiji-schema/commit/0677a10d166ef8daf4b762f7de587194df78a64a
kiji-mapreduce: KIJIMR-270.  Update schema.impl refs (SCHEMA-693).

review: https://review.kiji.org/r/1781
issue: https://jira.kiji.org/KIJIMR-270
commit: https://github.com/kijiproject/kiji-mapreduce/commit/e097612a9a7feb2b60c783d6e5334c87d9fa27fd
kiji-mapreduce: KIJIMR-271.  Update schema dependency to 1.4.1.

Needed for refactoring of schema.impl to schema.impl.hbase in
SCHEMA-693.

review: https://review.kiji.org/r/1784
issue: https://jira.kiji.org/KIJIMR-271
commit: https://github.com/kijiproject/kiji-mapreduce/commit/acc5ad87020a39f582c68e1af8a2e6aa797e671c
kiji-mapreduce-lib: KIJIMRLIB-27. Remove unused kiji-platforms dependency

issue: https://jira.kiji.org/browse/KIJIMRLIB-27
review: https://review.kiji.org/r/1787
commit: https://github.com/kijiproject/kiji-mapreduce-lib/commit/48992c38da177ee2338d4931b3c15d894fabb351
kiji-hive-adapter: KIJIHIVE-46. Update to reflect hbase class moves in KijiSchema

issue: https://jira.kiji.org/browse/KIJIHIVE-46
review: https://review.kiji.org/r/1788
commit: https://github.com/kijiproject/kiji-hive-adapter/commit/70b8152fd07d2e1d3743fcbc989836ec284f2dd3
kiji-scoring: Increases memory for child process that runs unit tests.

Without this change, LocalJobRunner was running out of heap space on OS X.
commit: https://github.com/kijiproject/kiji-scoring/commit/a4418f372482e005898393de22a49aac3feb0180