HHH-9498 Using C3P0 connection pool but not setting hibernate.connection.isolation results in a NumberFormatException
HHH-9508 Avoid source syntax which doesn't work in Eclipse
HHH-9508 Improve trace logging in ActionQueue
HHH-9330 : orphanRemoval=true does not work in bidirectional relationships (without cascading)

(cherry picked from commit ef3550eed5bac8bf4f6298493a9d771851843367)
HHH-9330 : Test cases for orphanRemoval=true does not work in bidirectional relationships (without cascading)

(cherry picked from commit 1ff9edfb81057535f436a32b3631a3bc0665bbe3)
HHH-9091 : Cascaded collection delete fails due to wrong execution sequence (test case)

(cherry picked from commit 3b57f1612d40ae74eb0001aa67e86182e3dfedcd)
HHH-8401 : Support fractional seconds on MySQL 5.7

(cherry picked from commit fe94cda1d1a2ede18b5a577e3ac80db85a806ef3)
HHH-6670: H2Dialect should use "if exists" when dropping sequences