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

[Garrett Cooper]

On Apr 14, 2012, at 6:01 PM, Bob Friesenhahn wrote:

> 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?

	This sort of depends on whether or not the device is hardcoded in the zpool, right?
Thanks!
-Garrett