[jbosscache-dev] storeState/loadState moved to AbstractCacheLoader

Hey, storeState/loadState cacheloader methods have been moved up to AbstractCacheLoader. Non-delegating cacheloaders (file,jdbc,bdbje and jdbm) are using these methods instead of implementing their own. I've added additional tests to ensure that all combinations of cacheloaders are interoperable and I've tested them with both streaming and byte based transfers. Vladimir