If the user specifies an architecture other than the native architecture on Mac, we should attempt to emulate that architecture.
<rdar://problem/65153804>
Created attachment 403636 [details] Patch
Created attachment 404269 [details] Patch
rs=me
Created attachment 404339 [details] Patch for landing
Committed r264396: <https://trac.webkit.org/changeset/264396> All reviewed patches have been landed. Closing bug and clearing flags on attachment 404339 [details].