Use memcmp for uint256 equality/inequality
Use memcmp for uint256 equality/inequality

(cherry picked from commit 1e4f87f5a13e34a457b537e9d13a212e6c5b754f)

reddcoin-project/reddcoin,reddcoin-project/reddcoin,reddcoin-project/reddcoin,reddcoin-project/reddcoin,reddcoin-project/reddcoin,reddcoin-project/reddcoin