Bugfix: By making the electroweak couplings static (in commit
2063d1ccc7ea6f6df9a8a48a43b0db84fcb86a14), they had compilation unit
scope, i.e. there were different ew. couplings for MssmSoftsusy and
FlavourMssmSoftsusy.

However, in softpoint.cpp both MssmSoftsusy and FlavourMssmSoftsusy
objects are used in parallel.  There it seems to be necessary that
they share the same ew. couplings (this was the old behaviour before
the above commit).  This behaviour is now restored by making the
ew. couplings non-static global variables.
Merge remote-tracking branch 'origin/nmssm2' into nmssm2