Fix FakeExtVM.
Fix FakeExtVM.

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