swift234

Default swift-ide-test to -implicit-objc-with like the rest of the world.

We require some level of consistency between the way the overlays were
built and what we work with in our mock SDK. The IDE/sdk_sugar.swift
test failure was because the overlay referenced "init(coder:)" while
the test was looking for "init(withCoder:)". Hilarity ensued
<rdar://problem/17791048>.

This only impacts testing.

Swift SVN r20564