news/tin: Improve port

* Switch from PORTVERSION to DISTVERSION
* Clean up MASTER_SITES and use upstream main site as backup
* Switch to xz release tarball
* Use helpers whenever possible and USES= localbase:ldflags
* Sort CONFIGURE_ARGS as they're listed when executing
  ./configure --help
* Sort OPTIONS
* Rearrange Makefile to closer match Porters Handbook

PR:		280279
Reviewed by:	kbowling