move Z3 sanity check to lowOrg to avoid Z3 violation in lowOrg
additional non-SLHA output for the NMSSM

We write out the flags Z3 and SoftHiggsOut, which gives the user
more information about the parameter point and helps debugging.
print out NMSSM-specific warning in SLHA format
ignore lines which contain only whitespace

This avoids strange warnings when reading SLHA file
Merge branch 'master' into nmssm2
changed comments about nmssmtools flags for clarity as discused with Ben.
fixed merge conflict in manual.
Merge branch 'master' into nmssm2
implement Tony's changes to the NMSSM manual
Merge branch 'nmssm2' of https://github.com/Expander/softsusy