Adding unstarted JNI implementation needed by VarHandle

The creation of a FieldVarHandle depends on Field.getArtField() and
Field.getNameInternal() which are native methods. As
AtomicInteger (and other java.util.concurrent.atomic classes) are
going to use VarHandle, these methods need to be available in
unstarted non-transaction runtime.

This change adds these methods to unstarted runtime.

Test: m
Bug: 188889082
Change-Id: I7d9a05aef1bbad05594b9bb326a741cf1485b744
2 files changed