encrypt command will suddenly no longer be annoying!

Thanks to a fix from Dina Nimeh's latest push of changeset 27f403fbf8ca, the next OpenSolaris release will now prompt you twice for the passphrase it uses to generate the key to encrypt your data with. This is a long overdue change, one that I can't believe we didn't do sooner. The way we implemented it before, it was too easy to lose your data if you made a mistake the first time you put in your passphrase. Yay!