This reduces the size a "Throw" or "Rethrow" takes in generated code by
switching from runtime calls to using WebAssembly runtime stubs. It also
removes a specialized runtime function and instead uses {Runtime_Throw}
which is generic and used by all code (including JavaScript code).

R=clemensh@chromium.org
BUG=v8:8091

Change-Id: Id4f637525f2ea9d81227931b1290d90ca5f376d1
Reviewed-on: https://chromium-review.googlesource.com/1243106
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56215}