This basically adjusts reality to match our expectations. Methods based
on Code::kConstantPoolOffset expected the constant pool to be located
immediately following the handler table and before the code comments
section, while it was actually emitted before the jump table. We did
not notice earlier since this is only relevant on ppc.

Bug: v8:8758
Change-Id: I189af491fe133a7dc480ff4056372ba7a27faa81
Reviewed-on: https://chromium-review.googlesource.com/c/1445880
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
Reviewed-by: Junliang Yan <jyan@ca.ibm.com>
Cr-Commit-Position: refs/heads/master@{#59299}