Use libsep256k1 if available
Use libsep256k1 if available

shahankhatch/pyethereum,ethereum/pyethereum,karlfloersch/pyethereum,pipermerriam/pyethereum,ckeenan/pyethereum,karlfloersch/pyethereum,shahankhatch/pyethereum,pipermerriam/pyethereum,ethereum/pyethereum