#127 genericize abstract StoreSPITest
 #127 fix incorrect getKeyType() calls
Merge pull request #129 from lorban/issue-127

Issue #127 StoreSPITest should use type parameters
Issue #110 A late evening shot at fixing Store.bulkCompute
Issue #110 : adding integration tests for putAll with or without cache writer
Issue #110 : testing getAll, including making assertions about the optional CacheLoader
Issue #110 : testing removeAll, refactoring the calls to the cacheWriter, using a Set for BulkCacheWriterException successes (since the consumer knows the values)