JDK Bugs with impact on SOMns

[smarr]

This issue is meant to track the state of JDK bugs, which have an impact on SOMns.

Currently, I am aware of the following issues:

• JDK-8189747 JDK9 javax.lang.model.util.Elements#getTypeElement regressed 1000x in performance
  • Once this is fixed, we should consider the todo in Reduce race-related stack overflows, and handled invalid layouts in ClassSlotAccessNode #244.
• JDK-8200166 Repeating annotations referring to to-be-generated classes don't work (seems to be fixed for JDK 11, not tested)
• JDK-8200163 javac aborts before first round of annotation processing is started (seems to be fixed for JDK 11, not tested)