[Midnightbsd-cvs] mports: linux_rpm.mk: add additional sanity checks.

[laffer1 at midnightbsd.org]

Log Message:
-----------
add additional sanity checks.

Modified Files:
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    mports/Mk/extensions:
        linux_rpm.mk (r1.6 -> r1.7)
        (http://cvsweb.midnightbsd.org/mports/Mk/extensions/linux_rpm.mk?r1=1.6&r2=1.7)