runtime: allow the Go runtime to return multiple stack frames for a single PC

runtime: allow the Go runtime to return multiple stack frames for a single PC

Upgrade the thread sanitizer to handle mid-stack inlining correctly.
We can now return multiple stack frames for each pc that the thread sanitizer
gives us to symbolize.

To fix #33309, we still need to modify the tsan library with its portion
of this fix, rebuild the .syso files on all supported archs, and check
them into runtime/race.

Update #33309

Change-Id: I340013631ffc8428043ab7efe3a41b6bf5638eaf
Reviewed-on: https://go-review.googlesource.com/c/go/+/195781
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Dmitry Vyukov <dvyukov@google.com>