Most tests were using %swift or similar substitutions, which did not
include the target triple and SDK. The driver was defaulting to the
host OS. Thus, we could not run the tests when the standard library was
not built for OS X.
Swift SVN r24504
Somewhere along the line, @objc inference started accepting class properties, but IRGen never got the memo, so we emitted metadata for the property and its accessor methods as if it were an instance property. Fixes <rdar://problem/17523205>.
Swift SVN r19489
