As a follow on to [8908], remove instantiation of parent class from getRotation call as well. The m_base pointer is now stored as a Component rather than IComponent so that the parent can be accessed directly without going through a dynamic_cast. Also a couple of minor cleanups around creating vectors and added a compiler directive for using the statistics within the Cache class. the hit/miss counts are now only accumulated if USE_CACHE_STATS is defined. Re #2276