Adding get/put and compare-and-set methods to Unsafe

As they are needed for the update of java.util.concurrent to
11+28, the native implementation and intrinsics for the following methods have
been added to jdk.internal.misc.Unsafe:
	jdk.internal.misc.Unsafe.compareAndSetLong
	jdk.internal.misc.Unsafe.compareAndSetObject
	jdk.internal.misc.Unsafe.getLongAcquire
	jdk.internal.misc.Unsafe.putLongRelease
	jdk.internal.misc.Unsafe.getObjectAcquire
	jdk.internal.misc.Unsafe.putObjectRelease

Test: m
Test: art/test/testrunner/testrunner.py -t 2235-JdkUnsafeTest
Bug: 188889082
Bug: 190791083
Change-Id: Iacd39ea1750c92a828d99241bff6b609acadb025
10 files changed