Code duplicates in EntityManagerImpl
fixed #428

NPEs on multi-threaded em.clear() calls
Added review comment and
Added benchmark code and
Fixed byte array datatype problem for #417
Merge branch 'trunk' of github.com:impetus-opensource/Kundera into trunk
Merge pull request #430 from bsideup/bugfix-428

fixed #428
Merge pull request #429 from bsideup/patch-4

Code duplicates in EntityManagerImpl
Modified junit for issue#416
Modified for current trunk version
Commented couchdb code from benchmark
Removed couchdb related files. As were causing build failures.
Fixes for clearing memory.
Merge branch 'trunk' of github.com:impetus-opensource/Kundera into trunk

Conflicts:
	benchmark/ycsb/pom.xml
Merge branch 'trunk' of github.com:impetus-opensource/Kundera into trunk

Conflicts:
	benchmark/ycsb/src/main/java/com/impetus/kundera/ycsb/benchmark/CouchDBNativeClient.java
	benchmark/ycsb/src/main/java/com/impetus/kundera/ycsb/utils/CouchDBOperationUtils.java
Changed some log in persistence delegator
and fixed one test case
Fixed null pointer #417
Changed kundera-elastic-search dependency scope
#432
Merge branch 'trunk' of https://github.com/impetus-opensource/Kundera into trunk
Fix for ISsue #432
Merge branch 'trunk' of github.com:impetus-opensource/Kundera into trunk