OpenJDK 11: Adding Unsafe new intrinsics for AtomicIntegerFieldUpdater

Adding native implementation for:
jdk.internal.misc.Unsafe.compareAndSetInt

Adding intrinsics for:
jdk.internal.misc.Unsafe.compareAndSetInt
jdk.internal.misc.Unsafe.getIntAcquire
jdk.internal.misc.Unsafe.putIntRelease

Test: m
Test: art/test/testrunner/testrunner.py -t 2235-JdkUnsafeTest
Bug: 188889082
Bug: 190791083
Change-Id: Iba4a66d29ad27e269a7be0d5d5c8397755040784
10 files changed