add end to end test cases related to overloaded functions
add end to end test cases related to overloaded functions

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