Changing how to compute_RHS, mult for dielc outside
Changing how to compute_RHS, mult for dielc outside

    - Because in LSPR problems the dielectric constants are
    complex, we multiply for 1/dielectric outside the function
    compute_RHS, which is a CUDA kernel that only accepts reals.

barbagroup/pygbe,barbagroup/pygbe,barbagroup/pygbe