Map fields from @MappedSuperClass/@Entity super class

	modified:   astyanax-entity-mapper/src/main/java/com/netflix/astyanax/entitystore/EntityMapper.java
	modified:   astyanax-entity-mapper/src/test/java/com/netflix/astyanax/entitystore/EntityMapperTest.java
	new file:   astyanax-entity-mapper/src/test/java/com/netflix/astyanax/entitystore/HierarchyEntity.java
New optimized Serializers for Double[] and Integer[] types.