Previously, validation closures were executed on the Request’s operation queue and required `self` to be captured. Now that the `Request` holds the validation closure references in an internal array, it’s necessary to mark them as unowned.

This environment variable disables all the additional logging information produced by the internal Apple frameworks. This commit should be reverted once Xcode 8 removes all the additional logging.

Without this, Alamofire was failing to compile when used as a submodule.

Typo: Reponse -> Response

The test suite also now only cleans up the directory in which all files are written. This fixes the issue on macOS where a user’s Documents and Application Support directories were being deleted when running the test target.

None of these project changes result in any different behavior. I just removed target overrides where they should have been set.

Feature - URLRequest Creation Safety