Switch from pax to tar for extracting cpio archives. pax requires a

writable /tmp (or TMPDIR) and thus is unsuitable for this job.

Tested by:	Joerg Pulz <Joerg dot Pulz at frm2 dot tum dot de>
PR:		conf/88293

etc/rc.initdiskless

@@ -309,7 +309,7 @@ for i in ${templates} ; do
 	if [ -f $j ]; then
 	    create_md $subdir
 	    echo "Loading /$subdir from cpio archive $j"
-	    (cd / ; /rescue/pax -r -z -p e -f $j)
+	    (cd / ; /rescue/tar -xpf $j)
 	fi
     done
     for j in /conf/$i/*.remove ; do