[11] RFR JDK-8198441: Replace native Runtime::runFinalization0 method with shared secrets

[mandy chung]

Webrev:
  http://cr.openjdk.java.net/~mchung/jdk11/webrevs/8198441/webrev.00

This is a small cleanup that replaces the native Runtime::runFinalization0
method with shared secrets to invoke Finalizer::runFinalization in java.

Mandy