Added solidity interop test
Added solidity interop test

karlfloersch/pyethereum,pipermerriam/pyethereum,ethereum/pyethereum,ethermarket/pyethereum,shahankhatch/pyethereum,karlfloersch/pyethereum,harlantwood/pyethereum,vaporry/pyethereum,pipermerriam/pyethereum,ckeenan/pyethereum,ddworken/pyethereum,shahankhatch/pyethereum,holiman/pyethereum,inzem77/pyethereum,ethereum/pyethereum