SCHEMA-485. Add profiling pointcuts for HBase reads/writes

Added pointcuts for direct Kiji writes to the LogTimerAspect,
and making LoggingInfo public for use in KijiMR.
SCHEMA-515. Expose table and data request in HBaseKijiRowData.

This commit allows framework developers to access the table and data
request that are part of HBaseKijiRowData. In particular, this
facilitates framework developers making shallow copies of row data
with configuration changes.

Reviewed by: milo
SCHEMA-506. Implement validation logic during table layout updates

- Adds a TableLayoutUpdateValidator that focuses on validating Avro schema changes.

issue: https://jira.kiji.org/browse/SCHEMA-506
review: https://review.kiji.org/r/900
SCHEMA-506. Implement validation logic during table layout updates

issue: https://jira.kiji.org/browse/SCHEMA-506
review: https://review.kiji.org/r/944
starting security skeleton
little work, set default version.