typedef std::vector<unsigned char>.
typedef std::vector<unsigned char>.

Introduce a typedef for std::vector<unsigned char> to simplify life in
the future.

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