Also works for nested templates. I find it useful for debugging.
Possible usage:
std::cout << "getTypename<AType>() = " << getTypename<Atype>() << std::endl;
std::cout << "getTypename<decltype(AnInstance)>() = " << getTypename<decltype(AnInstance)>() << std::endl;
Allows multi-precision work and paves the way for alternate BC's and such like
allowing for example G-parity which is important for K pipi programme.
In particular, can drive an extra flavour index into the fermion fields
using template types.
