[mkfile mkpaqfs.c paqfs.c paqfs.h]
this fixes a checksum error caused by looking for the wrong tag

here's a test script

#!/bin/rc
rfork en
ramfs

cd /tmp
for(i in a b c d e f g h i j k l m n o p)
	touch `{dd -quiet 1 -if /dev/zero -count 1 | tr '\x00' $i}
mkpaqfs -o paq.paq
paqfs paq.paq
ls /n/paq > /dev/null