hg: panama/panama/jdk: Introduce C2-specific query: getMaxVectorSize()

[vladimir.x.ivanov at oracle.com]

Changeset: 300a5ac72db8
Author:    vlivanov
Date:      2017-11-21 23:28 +0300
URL:       http://hg.openjdk.java.net/panama/panama/jdk/rev/300a5ac72db8

Introduce C2-specific query: getMaxVectorSize()

! src/java.base/share/classes/jdk/internal/misc/Unsafe.java
+ test/panama/vector/MaxVectorSize.java