RFR : 8218276: AIX build fails in tieredThresholdPolicy.cpp

[Baesken, Matthias]

Hello,  please review this small build fix  for AIX .

Currently the AIX builds for jdk/jdk  fail with :

"/rs6000_64/nightly/jdk/src/hotspot/share/runtime/tieredThresholdPolicy.cpp",
line 481.23: 1540-0129 (S) The qualifier "SafepointSynchronize" is not defined in the current scope.
"/rs6000_64/nightly/jdk/src/hotspot/share/runtime/tieredThresholdPolicy.cpp",
line 506.23: 1540-0129 (S) The qualifier "SafepointSynchronize" is not defined in the current scope.

Seems we miss an inclusions.


Webrev and bug :

http://cr.openjdk.java.net/~mbaesken/webrevs/8218276.0/

https://bugs.openjdk.java.net/browse/JDK-8218276


Best regards, Matthias