[CFT] Patch to bsdinstall to support root-on-ZFS and GELI

[Allan Jude]

For those of you not aware, the latest version of the root-on-ZFS+GELI
in bsdinstall patch shipped as part of FreeBSD 10.0-BETA1 today. Please
test it and report any issues you have.

There is one known issue (already patched in our repo), where if you do
a GELI pool, the unencrypted /boot pool is not mounted properly once the
system is up (a case where the /boot/zfs/zpool.cache is still useful)

-- 
Allan Jude