Fixed problem with rank of mneut (and other NMSSM parameters) in NmssmSoftSusy object *old* in itLowSoft().  No difference in Devtest.x outputs in MSSM limit
altered boundary condions so that mS is no longered entered or set in the semiconstrained case.
reinstated lost changes from revision before last.
Bug fixes in addNeutLoopGauge and addNeutLoopHiggs in softsusy.cpp.  In the contributions to the self-energy matrices sigmaL, sigmaR, and sigmaS, the sum over k ran from 1->4 (which is wrong because mch(k) is rank 2).  New if statements included (as in Ben's master code).  Empty diffs produced after running softpoint.x
Merge branch 'nmssm2' into read-nmssm-slha