ports/80679: emulators/linux_base-8: Use ${MACHINE_ARCH} instead of ${ARCH}.

[Mark Linimon]

Synopsis: emulators/linux_base-8: Use ${MACHINE_ARCH} instead of ${ARCH}.

Responsible-Changed-From-To: freebsd-emulation->emulation
Responsible-Changed-By: linimon
Responsible-Changed-When: Mon May 9 12:39:12 GMT 2005
Responsible-Changed-Why: 
canonicalize assignment.

http://www.freebsd.org/cgi/query-pr.cgi?pr=80679