This CL adds iOS build support to gomobile command.
$ gomobile build golang.org/x/mobile/example/basic
gomobile builds an .app file that is signed with the development
provisioning entities.
You may deploy .app files to your test device or convert them to IPA
to publish on App Store or share them as an AdHoc distribution.
target=ios flag requires a Darwin host machine.
Fixesgolang/go#11043.
Change-Id: Ibc23b6d355f10b09940b20c813eb73d0f4313851
Reviewed-on: https://go-review.googlesource.com/11587
Reviewed-by: David Crawshaw <crawshaw@golang.org>
d1e52bb351