[Midnightbsd-cvs] src: Makefile: make warns 3 friendly

[laffer1 at midnightbsd.org]

Log Message:
-----------
make warns 3 friendly

Modified Files:
--------------
    src/usr.sbin/cron/lib:
        Makefile (r1.2 -> r1.3)
        (http://cvsweb.midnightbsd.org/src/usr.sbin/cron/lib/Makefile?r1=1.2&r2=1.3)