message: removed reference to LT_INIT when compiling secp256k1-zkp on darwin
diff: cd ${TEMP_DIR}
  git clone https://github.com/cryptonomex/secp256k1-zkp.git
  cd secp256k1-zkp
  - export LT_INIT=$( which libtool )
  ./autogen.sh
  if [ $? -ne 0 ]; then
  printf "\tError running autogen\n"
  