And use configure's -sdk argument to choose between the iphoneos and the
iphonesimulator SDK. xcodebuild -showsdks can be used to list the
available SDKs. Passing an SDK without a version postfix implies
the latest version of the SDK.
Change-Id: I881df754d522fc91aaa16ba3e39cf0c37a21a1f1
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@digia.com>