Implemented w/ tests

implementation of multi connection load with new state-9 test to go
with it
more tests to follow
**Changed LoadClientTest to utilize the LoadClient’s openConnection
instead of ClientTestBase
Merge branch 'master' into MultiLoad
Pull hosts down to concrete options so LoadClient can do multiple -h. Misc cleanup
Reduce duplication
Add to help text
Revert unnecessary change
Sync as getConnection is called concurrently
merge JerettS: Multi host load

Merge pull request #75 from JerettS/sql-layer-client-tools/MultiLoad
https://github.com/FoundationDB/sql-layer-client-tools/pull/75