Share the multi-arch infrastructure between UIKit and macOS

There's no reason for this to be separated, regardless of the
support status of i386 macOS builds. Additional architectures may
appear in the future (and currently there's actually 3 - i386,
x86_64, and x86_64h for Haswell CPUs). So this feature could be
used to get combined generic x86_64 and Haswell builds. Some
system libraries appear to have an x86_64h slice in Sierra.

[ChangeLog][Build System] Support for universal binaries on macOS
has been re-introduced.

Change-Id: I1c89904addf024431fdb3ad03ea8ab85da7240ad
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
Reviewed-by: Jake Petroules <jake.petroules@qt.io>

0 files changed, 0 insertions, 0 deletions