ISPN-4767 DirectoryImplementor needs to handle PersistenceException on metadata load
ISPN-4767 Introduce a SlicedBufferIndexInput to be able to slice a SingleChunkIndexInput
ISPN-4767 Introduce a SlicingInfinispanIndexInput to support slicing of an InfinispanIndexInput
ISPN-4767 Remove checksumming wrapper and embed CRC32 in the InfinispanIndexOutput
ISPN-4767 Minor adjustments to be able to compile and test with each versions of Lucene {4.8, 4.9, 4.10}
ISPN-4767 Update documentation to mention the supported Lucene compatibility ranges
ISPN-4779 Upgrade to Hibernate Search 5.0.0.Alpha7
ISPN-4620 Add partition handling configuration in the server
ISPN-3938 AdvancedAsyncCacheLoader.process() concurrency issues

Simplify ExecutorAllCompletionService to track the tasks itself instead of
using an ExecutorCompletionService.