Conflicts:
	core/src/main/java/com/yahoo/ycsb/workloads/CoreWorkload.java

fixed conflict, fixed extra spaces and space between methods

[kudu] Upgrade client dependency to Kudu 0.8.0

Kudu 0.8.0 deprecated how predicates were specified and introduced
a more simple one.

[googledatastore] Update googledatastore API version to v1beta3.

[asynchbase] Fix Netty library version issue that prevents it from

loading outside the unit tests.

[asynchbase] Add AsyncHBase as an alternative to the default HBase cl…

Note the Guava classes in the test directory for AsyncHBase. These are there
as AsyncHBase uses Guava >= 18 while HBase and the mini cluster use Guava 12.

[core] Add an incrementing printable string generator.

This will be used for #653 for databases that require keys or other values to use a limited character set. This generator will create a sequence of strings using a defined list of UTF code points from which to pull.

Fixed nits suggested by @busbey

[riak] Added new binding for Riak, based on the one created by Basho Technol…

[core] Add CoreWorkload.createOperationGenerator() for use in other w…

[couchbase2] Allow to log latency & runtime metrics.

[riak] R, W, etc. options are ignored for strong-consistent updates. So, it's useless to specify them.
[riak] Updated README.md with new considerations about benchmarks which use strong consistency model.

This changeset adds 2 config params which can be tweaked to enable
and print both the network latency and runtime metrics to the
configured logger.

[riak] Configured RiakKVClientTest.java to work with default bucket-type instead of creating a new one.

[travis] Added riak-admin commands to create and activate test bucket.

[riak] Added RiakKVClientTest.java

4/13/2016 - getting updates from upstream master
4/13/2016 fixed comments relatede to pull request #674

[riak] Added test unit.
[riak] Set eventual consistency as default in both README.md and riak.properties file, as strong consistency it's not the main model adopted by the db (check http://docs.basho.com/riak/kv/2.1.4/developing/app-guide/strong-consistency/ for further info).
[riak] Fixed getFields() function by transforming it into createResultHashMap(). This function creates the HashMap to give as result appropriately.
[riak] Removed scan transaction support for strong consistency model. 2i search is not allowed for this model, neither there is a suitable search mean to use to achieve a proper scan transaction.
[riak] Done minor fixes to code and comments.

Updated top level README for YCSB 0.8.0 release

[build] Added Oracle JDK 8 to .travis.yml

Adding upstream changes to this branch

[riak] Done some code/comments cleanup.

[riak] Removed test unit as it only works with a local cluster installation (there is no Riak test or mock utility).
[riak] Packaged into com.yahoo.ycsb.db.riak.
[riak] Removed unused dependencies.
[riak] Bugfix for update() function that returned positive even with no nodes in the cluster.

[hbase10] Still too many threads #691.