Sync jdk9/hs-comp and jdk9/hs (ppc-aix changes)

[Vladimir Kozlov]

The testing of PPC-AIX changes in jdk9/hs-comp is finished.
I pulled all hotspot changes from jdk9/hs/hotspot to 
jdk9/hs-comp/hotspot today. And I am pushing additional ppc fix for 8034797.
I merged jdk from jdk9/hs/jdk yesterday. Now jdk9/hs-comp forest has all 
changes from jdk9/hs.

I ran jdk control build of whole jdk9/hs-comp forest in JPRT and it passed.

Volker and Goetz, please, verify that jdk9/hs-comp does not have any 
problems for you. I will merge it into jdk9/hs tomorrow if it is good.

Thanks,
Vladimir