Bitcoin Wallet 4.0 is now rotating addresses.

It is deriving them deterministically (BIP32).

Bitcoin Wallet 4.0 is currently a release candidate: https://plus.google.com/101256420499771441772/posts/KujxxG844gH

I'm putting this up for discussion already. I'll let you know once it is released.


@schildbach Should be also replaced, by `checkpassprivacybasic`