RFR: 8247466: AIX link error undefined MetaspaceShared::_use_optimized_module_handling

[Baesken, Matthias]

Hello, please review this AIX (and cds) related build fix.

It seems that recent changes started to reference  MetaspaceShared::  from other files, but metaspaceShared.cpp is excluded in the AIX build
(because it is  has cds disabled).


Bug/webrev :

https://bugs.openjdk.java.net/browse/JDK-8247466

http://cr.openjdk.java.net/~mbaesken/webrevs/8247466.0/

Thanks, Matthias