[Midnightbsd-cvs] mports: Makefile: bump for related libs

[laffer1 at midnightbsd.org]

Log Message:
-----------
bump for related libs

Modified Files:
--------------
    mports/graphics/cairo:
        Makefile (r1.20 -> r1.21)
        (http://cvsweb.midnightbsd.org/mports/graphics/cairo/Makefile?r1=1.20&r2=1.21)