misc/88840: Enable use of CVSROOT variable into src Makefile (for update target)

[Ruslan Ermilov]

Synopsis: Enable use of CVSROOT variable into src Makefile (for update target)

State-Changed-From-To: open->closed
State-Changed-By: ru
State-Changed-When: Fri Nov 11 14:04:53 GMT 2005
State-Changed-Why: 
CVSROOT is special environment variable that is already
set in environment for many people, and enforcing it
through the -d option may upset some of them.

What you want is already possible by doing
	make -DCVS_UPDATE CVS="cvs -d xxx"

http://www.freebsd.org/cgi/query-pr.cgi?pr=88840