Move reguse update to moveto()
Move reguse update to moveto()

This function is going to be used for all the register transfer,
so it is the best place where update the registers.

k0gaMSX/scc,k0gaMSX/scc,8l/scc,k0gaMSX/kcc,8l/scc,8l/scc,k0gaMSX/kcc,k0gaMSX/scc