[Midnightbsd-cvs] src: Makefile: use new style tests

[laffer1 at midnightbsd.org]

Log Message:
-----------
use new style tests

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