Source-file copyright and license notices, preserved verbatim.

===== src/authorization.rs (source SHA-256 677e49c9f04b5e7697fb25579384c6ca9a7988400d52db4f0b98574e165e99dc) =====
/// # Potential improvements
///
/// * When generic specialization stabilizes prevent copying from `CString` arguments.
/// * `AuthorizationCopyRightsAsync`
/// * Provide constants for well known item names
