[hypertable] Checkstyle updates for the Hypertable binding.

Elasticsearch cleanup and version bump to 2.2.0

This commit fixes the Elasticsearch name in the README file for the
Elasticsearch project from "ElasticSearch" to "Elasticsearch".

This commit bumps the Elasticsearch dependency version from 2.1.1 to
2.2.0.

This commit fixes the Elasticsearch name throughout the YCSB benchmark
project from "ElasticSearch" to "Elasticsearch".

[core] added real version printout

Fixes #320

Updated top level README for YCSB 0.7.0 release

[couchbase] nit fix in Couchbase README

[orientdb] fixed scan with readallfields

[accumulo] don't run Accumulo tests on windows build.

The Accumulo tests don't properly initialize their mini cluster on windows,
so skip the tests entirely in that environment.

closes #617

Revert "[accumulo] don't run Accumulo tests on windows build."

[accumulo] don't run Accumulo tests on windows build.

The Accumulo tests don't properly initialize their mini cluster on windows,
so skip the tests entirely in that environment.

closes #617

[client] Added basic command line argument error messages to Client.java

Orientdb scan fix

[docs] Update link to old Yahoo! page due to site redesign.

[hbase10] Turn off info servers during tests

[geode] Add Geode driver

Conflicts:
	bin/ycsb
        geode/src/main/java/com/yahoo/ycsb/db/GeodeClient.java
	pom.xml

[orientdb] put db conn stuff in sync method

All db connection and creation logic is the same, it is just pulled into
a synchronized method so that multiple threads run through the
connection process one at a time.

Fixes #571

[solr] tune down log output during tests.

Couchbase checkstyle

Also removed some unnecessary comments

Closes #480