jsonrpc option in cmakes, removed all warnings
jsonrpc option in cmakes, removed all warnings

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