Disallow auxpow blocks that have an auxpow themselves.
Disallow auxpow blocks that have an auxpow themselves.

This is a strange situation, but one that is currently allowed.  Forbid
it in the upcoming softfork.

chronokings/huntercoin,wiggi/huntercoin,fsb4000/huntercoin,chronokings/huntercoin,domob1812/huntercoin,wiggi/huntercoin,wiggi/huntercoin,chronokings/huntercoin,chronokings/huntercoin,domob1812/huntercoin,fsb4000/huntercoin,fsb4000/huntercoin,domob1812/huntercoin,wiggi/huntercoin,domob1812/huntercoin,fsb4000/huntercoin