Some changes in libdevcore.
Some changes in libdevcore.

LianaHus/solidity,ruchevits/solidity,arkpar/solidity,vaporry/solidity,ethers/solidity,gluk256/solidity,ruchevits/solidity,LefterisJP/solidity,chriseth/solidity,douglas-larocca/solidity,debris/solidity,shahankhatch/solidity,ruchevits/solidity,ruchevits/solidity,chriseth/solidity-doc-test