RFR (S): 8028066 : PPC64: 8025715 changes broke AIX build after sync

[Volker Simonis]

Hi,

this is a webrev which fixes the build on AIX again after the latest
jdk8/mainline version (including 8025715) was integrated into the
ppc-aix-port/stage repository:

http://cr.openjdk.java.net/~simonis/webrevs/8028066

It actually redoes the changes from "8024265: PPC64: Enable new build
on AIX " (https://bugs.openjdk.java.net/browse/JDK-8024265)

Thank you and best regards,
Volker