HHH-8288 Upgrade to Javassist 3.18
HHH-8318 test case
HHH-8318 updated test case
HHH-8318 - Problem determining qualifier to use for column names from HQL query parser in certain circumstances
HHH-8319
HHH-8319 checkstyle
HHH-8331 Create PostgreSQL9Dialect
HHH-7002 added support for "if exists" on "drop constraint"
HHH-8331 keep postgres81 as the default
Add test for HHH-8314
HHH-8210 JdbcCoordinatorImpl logs excessive warnings with some
connection pools
HHH-8335 Hibernate OSGi not included in build's /lib
HHH-7116 test case and fix
HHH-7116 Moved orderBy fix to AbstractEntityJoinWalker.  Copyrights,
formatting, and checkstyle
merge master