See: https://github.com/clearmatics/libsnark/blob/master/libsnark/gadgetlib1/gadgets/fields/fp6_gadgets.hpp Rename these gadgets to explicit the fact that Fp6 is built as "2 over 3" for MNT6. E.g. `Fp6_variable` -> `Fp6_2over3_variable` etc.
See: https://github.com/clearmatics/libsnark/blob/master/libsnark/gadgetlib1/gadgets/fields/fp6_gadgets.hpp
Rename these gadgets to explicit the fact that Fp6 is built as "2 over 3" for MNT6.
E.g.
Fp6_variable->Fp6_2over3_variableetc.