cvs commit: src Makefile.inc1

[M. Warner Losh]

In message: <200502271151.j1RBpkGF086079 at repoman.freebsd.org>
            Ruslan Ermilov <ru at freebsd.org> writes:
:   Make it clear we no longer support source upgrades from
:   versions prior to 5.3.

Cool  I was going to suggest code like this.

Maybe add 'You must upgrade to RELENG_5 before upgrading to this
version' or similar text.

And an entry in UPDATING might be good too.

Warner