zfs start failure when /usr is on zfs (and rcorder change suggestion)

[JoaoBR]

Hi

when you need /usr/compat on your sistem (linuxfs) and you have /usr on zfs 
boot fails because mountcritlocal does not find /usr/compat

so I changed the rcorder as you can see in the attached files

also I changed /etc/rc.d/zfs and added /etc/rc.d/zfs_swap in order to make the 
actual zfs_swap behaviour and configuration a little bit more 
[user]understandable and easier and working

this needs two more rc vars as

zfs_swap_enable="YES|NO"
zfs_swap_vols="spaced  vol_list"

using this rc files zfs, swap on zfs and other fs mount fine

the changed /etc/rc.d/zfs prevents losing zpools (and later import) as long as 
zfs started by this script


-- 

João