HCOLL-172 Verified thath IntIntMultiMap now supports up to 2^32 entries; ShortShortMultiMap up to 2^16; ChronicleMap.Segment are now long-sized; attempt to support non-power-of-2 number of segments by HashSplitting (not tested yet); improved logic and dependencies between actualSegments(), actualEntriesPerSegments() and minSegments() methods in ChronicleMapBuilder; minor fixes