review hbase direct output storage driver (AKA HCatalog-73)
Review Request #2060 - Created Sept. 27, 2011 and updated
hbase direct output storage driver as describe here: https://cwiki.apache.org/confluence/display/HCATALOG/HBase+Output+Storage+Driver+-+Design
added a unit mini cluster test framework and unit tests. since this is a sub-module of hcatalog parent tests shouldn't be affected.