RFC: $USE_[GU]ID for consistent [GU]ID handling

[Norikatsu Shigemura]

Hi Hiroki!

On Mon, 08 Dec 2008 03:32:50 +0900 (JST)
Hiroki Sato <hrs at freebsd.org> wrote:
>  The attached patch includes an example of rewrite of an existing
>  ports (japanese/sj3-server).  After investigating ~300 ports in the
>  ports tree which add uid/gid I think the attached implementation can
>  cover most of the use case, but there may be something I missed.
>  Comments are welcome.

	Wow! That's cool!
	If this patch will be committed, I'll rewrite some my ports
	to USE_[GU]ID.