Bump up mongo-java-driver to 2.8.0
Added close() for MongoDbClient
Hypertable plugin in YCSB framework
Fixed bug in CoreWorkload. Read-Modify-Write latency should be reported in microseconds, not milliseconds.
Added lines to hypertable/pom.xml to allow import of hypertable jars.
Thanks to minghan@github for uploading jar to clojars.
Disables the gemfire plugin.

This patch comments out the gemfire plugin from the pom.xml as the
build fails with the following message:

[ERROR] Failed to execute goal on project gemfire-binding: Could not
resolve dependencies for project com.yahoo.ycsb:gemfire-binding:jar:0.1.4:
Failure to find com.gemstone.gemfire:gemfire:jar:6.6 in
http://dist.gemstone.com.s3.amazonaws.com/maven/release/ was cached in
the local repository, resolution will not be reattempted until the
update interval of gemstone has elapsed or updates are forced -> [Help 1]
gh-76 Implemented OrientDB client
gh-76 Updated the orientdb version to 1.0.1.
gh-88 YCSB client for Amazon DynamoDB
Updated CHANGELOG.
gh-89 Patch for YCSB Cassandra Client version 1.0.6
gh-93 New ElasticSearch Database Implementation
gh-97 Bug fixes in dynamodb plugin

I have fixed a bug in insert() and delete() methods.There are also
some cosmetic changes to readme and properties files.
gh-97 Updated CHANGELOG
gh-95 Update the MongoDB driver to use a singleton Mongo instance for
each test client.

Add a control (via properties) for the number of connections the Mongo
instance will create/use.
gh-95 Update the MongoDB driver version to 2.9.0.
gh-102 Minor fix so the classpath path separator is OS independent
gh-100 Time clean up and count it for hbase as update.

* Time the cleanUp of a DBWrapper
* For HBase this clean up should also be counted as an update.
gh-47 Fix an issue with JDBC scans

JDBC scans did not instruct the driver to use a specific fetchsize,
resulting in most cases in an OOM; add support for setting fetchsize.

Also add support for disabling autocommit on the JDBC connections,
mostly because Postgres for example doesn't support setting fetchsize
without disabling autocommit.
Added a configuration parameter for turning auto flush on or off with HBase.