git: openjdk/loom: fibers: Revert "Refactor java_lang_Throwable::fill_in_stack_trace"

[duke]

Changeset: 967a5666
Author:    Ron Pressler <ron.pressler at oracle.com>
Date:      2020-07-14 19:53:25 +0000
URL:       https://git.openjdk.java.net/loom/commit/967a5666

Revert "Refactor java_lang_Throwable::fill_in_stack_trace"

This reverts commit 2e7f748ebd3ef459c75f0547882ec8dd2793012a.

! src/hotspot/share/classfile/javaClasses.cpp
! test/hotspot/jtreg/runtime/Throwable/ThrowableIntrospectionSegfault.java