[Midnightbsd-cvs] mports: sites.mk: add some north american xorg mirrors

[laffer1 at midnightbsd.org]

Log Message:
-----------
add some north american xorg mirrors

Modified Files:
--------------
    mports/Mk/components:
        sites.mk (r1.36 -> r1.37)
        (http://cvsweb.midnightbsd.org/mports/Mk/components/sites.mk?r1=1.36&r2=1.37)