HSEARCH-1620 Remove dependency to WildFly patching system from Arquillian tests
HSEARCH-1620 Remove Checkstyle rule about empty lines at end of file: unreliable across operating systems
HSEARCH-1622 Improve error report for infinite depth loops and add test
HSEARCH-1625 Upgrade H2 version to 1.4.178
HSEARCH-1623 Replace WeakIdentityHashMap with a threadsafe alternative
HSEARCH-1623 Test for threadsafety of parallel write operations out of transaction
HSEARCH-1626 Upgrade JGroups to 3.5.0.Beta9
HSEARCH-1621 Update Apache Lucene version to 4.9.0
HSEARCH-1621 IndexWriterConfig needs to be rebuild for each IndexWriter
HSEARCH-1621 Update hibernate-search-engine to the new Lucene API
Clarify error message