hg: graal/graal-jvmci-8: Pass Handle per value.

[doug.simon at oracle.com]

Changeset: eb2091fcd682
Author:    Roland Schatz <roland.schatz at oracle.com>
Date:      2015-11-09 14:34 +0100
URL:       http://hg.openjdk.java.net/graal/graal-jvmci-8/rev/eb2091fcd682

Pass Handle per value.

! src/share/vm/jvmci/jvmciCodeInstaller.cpp
! src/share/vm/jvmci/jvmciCodeInstaller.hpp
! src/share/vm/jvmci/jvmciEnv.cpp
! src/share/vm/jvmci/jvmciEnv.hpp
! src/share/vm/jvmci/jvmciJavaClasses.hpp