First implementation of sinThetaW in the DRbar scheme (using Denner
Eq. (4.5.45)).
Comment out the calculation of sinThetaW because the W and Z self-
energies contain all particles (including SM partilces).  But we
only want SUSY particles.
Create W and Z self-energies with heavy susy particles only
Use the self-energies with heavy susy particles only when calculating
the threshold corrections to sinThetaW
Set A0[0] to 0
Use template name for W and Z and make use of perturbation expansion
of sqrt
Make sure cos(ThetaW) matches the used W and Z masses in the self-
energies, in order to make all cancellations happen exactly.
The coefficient test for g1 and g2 works up to 20%.  One source for
the deviation is that we currently don't exclude goldstone bosons
and the SM higgs from the heavy W and Z self-energies.