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)