MongoDB 3.0 driver.

Created tests for the basic DB operations.

Updated MongoDB Inc. Driver version to 3.0.2.

closes #136

Signed-off-by: Sean Busbey <sean.busbey@gmail.com>

This includes changes to main pom for the v1.2.9 cassandra driver.

closes #145

* Need a SNAPSHOT version because non-SNAPSHOT is reserved for actual releases.
* Increment minor version per pre-1.0 guidelines from the Version Numbers guide

Fixes #236.

* Bumps `hbase.version` to 1.0.0
* Adds a new database, hbase-10, which targets the HBase 1.0 API.

* Increment Accumulo Version to 1.6.0
* Fix accumulo dependency versions
  - Harmonize guava version for Accumulo.
  - Automatically manage slf4j version.
* Clean up depr. code
* Clean up return codes and error logging

clean up dead code in client.

* set .gitignore to standard eclipse
* update versions of Accumulo to 1.4.4
* Pin slf4j binding to 1.5.8

Accumulo, Thrift, and YCSB all use different versions of slf4j, causing
runtime issues because everything is bundled together. Pin the version
to something in the middle that seems to work, even if it's not the
latest and greatest version.

Based on YCSB++

http://www.pdl.cmu.edu/ycsb++/

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]