[Midnightbsd-cvs] mports: sdl.mk: add _LIB to fix problems iwth depends

[laffer1 at midnightbsd.org]

Log Message:
-----------
add _LIB to fix problems iwth depends

Modified Files:
--------------
    mports/Mk/extensions:
        sdl.mk (r1.1 -> r1.2)
        (http://cvsweb.midnightbsd.org/mports/Mk/extensions/sdl.mk?r1=1.1&r2=1.2)