[aarch64-port-dev ] RFR: Merge from Shenandoah JDK8u since 2017-03-09

[Roman Kennke]

This merges all changesets from Shenandoah's jdk8u repository since
2017-03-09. It's all build fixes for i586 and Windows 64 builds.

http://cr.openjdk.java.net/~rkennke/merge-2017-03-23/webrev.00/
<http://cr.openjdk.java.net/%7Erkennke/merge-2017-03-23/webrev.00/>

I'll also tag it with
aarch64-shenandoah-jdk8u121-b14-shenandoah-merge-2017-03-23

Ok?

Roman