rewrite matrix plugin readme
HHH-6842 - Skip org.hibernate.test.annotations.manytoonewithformula.ManyToOneWithFormulaTest#testManyToOneFromNonPkToNonPk for DB2
Merge branch 'HHH-6068' of https://github.com/lukasz-antoniak/hibernate-core into lukasz-antoniak-HHH-6068
HHH-6780 - Wrong Query timeout calculation
HHH-6856 RowValueConstructorSyntax with In syntax is not working
HHH-6856 - RowValueConstructorSyntax with In syntax is not working
HHH-5992 - A query fails to return correct results silently
HHH-6860 Upgrade dependency to Hibernate Commons Annotations 4.0.1.Final
HHH-6851 DB2 doesn't support NotNullUnique causes org.hibernate.test.annotations.uniqueconstraint.UniqueConstraintTest.testUniquenessConstraintWithSuperclassProperty fail
HHH-6852 DB2 doesn't support exists in select
HHH-6858 non-intrusive performance improvements
HHH-6858 reuse reference to PersistenceContext
HHH-6862 Use generic Map for StatefulPersistenceContext.entityEntries
HHH-6862 Use generic Maps for more StatefulPersistenceContext fields
HHH-6862 Improve API of IdentityMap helpers to match actual use cases
HHH-6862 Switch to use Iterable from Iterator in IdentityMap helpers
HHH-6862 Reuse cached entryArray of IdentityMap in StatefulPersistenceContext as much as possible
HHH-6862 final polish
HHH-6863 make serviceBindingMap threadsafe
HHH-6863 make access to serviceBindingList threadsafe