Fixing a javadoc issue on jdk6
Changing the Lucene/Solr depenendency to be 4.4
Bumped the version from 0.5.1 to 0.6.0.
Updated release notes for 0.6.0.
[maven-release-plugin] prepare release release-0.6.0
[maven-release-plugin] prepare for next development iteration
Update jdiff files.
Initial commit of the core HBase Common libraries into the CDK. Instead of trying to integrate
these interfaces with the data-core package, I'm keeping them all segregated in their own module
until we figure out what we want to expose.

The cdk-data-hbase module provides interfaces for reading, writing and updating typed records to
and from HBase. This initial implementation supports Avro records for both the byte serialization
and in-memory representations. The avro implementation is in the com.cloudera.cdk.data.hbase.avro
package.

Features include ordered keys, full control over how schemas are mapped to rows that is familiar
to users of popular ORMs, familiar DAO interfaces, Avro schema management and migrations, and
optimistic concurrency control.

Features coming soon to the CDK include MR input and output formats and Pig support.