x11/xauth: Update to 1.1

Update x11/xauth to 1.1
Add LICENSE_FILE

Changelog:
https://lists.x.org/archives/xorg-announce/2019-July/003005.html

Obtained from: FreeBSD Graphics Team development repo

		https://github.com/FreeBSDDesktop/freebsd-ports/tree/feature/xorglibs

Sponsored by: B3 Init