Merge branch '0.2.1' of https://github.com/apache/gora into 0.2.1

Conflicts:
	CHANGES.txt
	gora-accumulo/pom.xml
	gora-cassandra/pom.xml
	gora-core/pom.xml
	gora-hbase/pom.xml
	gora-sql/pom.xml
	gora-tutorial/pom.xml
	pom.xml
	sources-dist/pom.xml
Merge branch '0.2.1' of https://github.com/cogniteev/gora into 0.2.1

Conflicts:
	CHANGES.txt
	gora-accumulo/pom.xml
	gora-cassandra/pom.xml
	gora-core/pom.xml
	gora-hbase/pom.xml
	gora-sql/pom.xml
	gora-tutorial/pom.xml
	pom.xml
	sources-dist/pom.xml