[Midnightbsd-cvs] mports: math/gmp: when using cpu optimizations, also set the os via

[laffer1 at midnightbsd.org]

Log Message:
-----------
when using cpu optimizations, also set the os via build.  Reported on IRC

Modified Files:
--------------
    mports/math/gmp:
        Makefile (r1.1 -> r1.2)
        (http://cvsweb.midnightbsd.org/mports/math/gmp/Makefile?r1=1.1&r2=1.2)
        distinfo (r1.1 -> r1.2)
        (http://cvsweb.midnightbsd.org/mports/math/gmp/distinfo?r1=1.1&r2=1.2)