Issue proper Delete when only covered column changed
Test covered column delete, add, modify for mutable indexes
Pad CHAR with space instead of null byte as per SQL spec
modifications to accept lowercase key property
First cut for providing query more functionality in phoenix using row value constructors.
Query more functionality using row value constructors
Merging after pulling changes from master.
Enabling batch support for indexes + bug fixes.

Now we correctly handle batches of updates - all updates for a given row are grouped into
a single Index Batch which is then processed by the usual update mechanisms.

Other Bug Fixes:
 - Wrong ordering in MutableIndexTest
 - Wasn't setting pending updates before cleanup
 - Adding debugging statements (and toString impls)
 - Removing ColumnFamilyIndexer since its a worse example than the CoveredColumn or Phoenix indexer
 - making stopped AtmoicBoolean in IndexWriter to help race conditions in stop/write
 -- might be cause of the concurrent modification issue when HRegion#doClose seen sometimes in the test.
Making index writing pluggable.

There are two main pluggability points: (1) writing the index and (2) handling failure.
This provides the option to mix and match choices. For instance, it would be pretty easy to
write an AsyncHBase writer and use the standad KillServerOnFailurePolicy to ensure that
the server fails if all index writes don't succeed. By default, we retain the exsiting
behavior, which uses a thread-pool to write to a cache of HTables and kills the server
if any write fails.
Merge pull request #442 from jyates/master

Making index writing pluggable.
Fix explain plan to reflect hinting that foces a range scan
Bug fix for IndexWriter.

Configuration keys for the IndexCommitter and FailurePolicy weren't specified,
causing a null pointer. Adding tests to catch this case in the future.
Cleanup to IndexUpdateManager and HTableInterfaceReference

Former: better toString format
Latter: fixing javadoc
Merge branch 'master' of github.com:forcedotcom/phoenix
updating the IndexTest with lowercase options
Fix build warnings
Bug fix for table caching + cleanup of tostrings.

Caching was closing HTables on shutdown, but the CoprocessorHost was also closing the same tables,
causing the concurrentModificationException on shutdown sometimes, which would cause the test
to hang. Also, using a SoftReference for the HTable doesn't work b/c the coprocessorHost has
a strong reference to the tables, causing them to never be cleaned up. Solution was to switch to
a standard LRU cache for the HTables; fortunately, also meant much simpler code.

Also, this meant fixing up some tests (and adding a new one for the caching factory).
Further, adding a rowkey tosString to IndexUpdateManager so we can better visualize the
updates being made.
Merge branch 'master' of github.com:forcedotcom/phoenix
Added tests
Undoing the time out change in ParallelIterator