bulk load changes (rework)

the changes include:
- renaming the hbase-extensions.jar to trafodion-hbase-extensions.jar
- changes to bulk load test and expected files
- changes to HBulkLoadClient.java
- changes to makefile

Change-Id: Ib807951fb78030219456b8c1949190d9065101f9
Merge "bulk load changes (rework)"