[review request] zfsboot/zfsloader: support accessing filesystems within a pool

[Bob Friesenhahn]

It would be nice if the updated FreeBSD bootloader could have the 
ability to boot both Solaris and FreeBSD root filesystems in the same 
pool so that one could switch between several zfs-based operating 
systems without needing to use a different partition for each one. 
Is this within the bounds of possibility or a totally irrational 
thought?

Bob
-- 
Bob Friesenhahn
bfriesen at simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/