3e414a4b6b
as snap_md_post target in etc/etc.${MACHINE}/Makefile.inc rather than
as release target in distrib/${MACHINE}/Makefile so that builds for
release in distrib/${MACHINE}/Makefile don't have to be serialized.
XXX: maybe ramdisk kernels should be installed into binary/kernel dir
XXX: as other ports rather than installation dir, and
XXX: kernel config names should be preserved in their filenames.