hg: loom/loom: imported patch filltrace

[ron.pressler at oracle.com]

Changeset: c6ed59abc5a8
Author:    rpressler
Date:      2018-11-05 17:38 +0000
URL:       http://hg.openjdk.java.net/loom/loom/rev/c6ed59abc5a8

imported patch filltrace

! src/hotspot/share/classfile/javaClasses.cpp
! src/hotspot/share/classfile/javaClasses.hpp
! src/hotspot/share/include/jvm.h
! src/hotspot/share/prims/jvm.cpp
! src/hotspot/share/runtime/vframe.cpp
! src/hotspot/share/runtime/vframe.hpp
! src/java.base/share/classes/java/lang/Throwable.java
! src/java.base/share/native/libjava/Throwable.c
! test/jdk/java/lang/Continuation/Basic.java
! test/jdk/java/lang/Continuation/Scoped.java