This increases the size of a Collator instance by a word to store
the bound compare function.

The instance to be bound is stored on the context of this builtin function.

Bug: v8:7800
Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng
Change-Id: Ie7581ab59fdfe4efff6d960e07ed2164fa6d9959
Reviewed-on: https://chromium-review.googlesource.com/1171967Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55130}