RFR: JDK-8218074 - Update Graal

[jesper.wilhelmsson at oracle.com]

Hi,

Please review the patch to integrate the latest Graal changes into OpenJDK.
Graal tip to integrate: db79f81716886b7883370cd6ea1bbf5c42966fa5

JBS duplicates fixed by this integration:
https://bugs.openjdk.java.net/browse/JDK-8217161
https://bugs.openjdk.java.net/browse/JDK-8218698
https://bugs.openjdk.java.net/browse/JDK-8218859

JBS duplicates deferred to the next integration:
https://bugs.openjdk.java.net/browse/JDK-8214947

Bug: https://bugs.openjdk.java.net/browse/JDK-8218074
Webrev: http://cr.openjdk.java.net/~jwilhelm/8218074/webrev.00/

This integration did overwrite changes already in place in OpenJDK. A subtask was created to hold the diff: https://bugs.openjdk.java.net/browse/JDK-8220387

Thanks,
/Jesper

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