Updated softsusy.cpp with sfermions, neutralinos and charginos one loop self energies split up to help reduce code duplication in nmssm.  Small changes to slha2Output due to bug fixes, and also due to changes in the higgs(0) handling of mA and mHpm, no longer adding self energies with p=0 to these, *but* including tadpoles in mA.  The latter can easily be reversed.
added g4terms to susy.cpp which Alex had added to nmssmsusy.cpp.  Needed for matching nmssmsoftsusy and softsusy in appropriate limits. This modifies the slha2Output.