rename SMSSM to SoftsusyMSSM to avoid conflicts with SARAH's SMSSM
rename smssm directory
rename model smssm -> SoftsusyMSSM
rename snmssm directory
rename snmssm to SoftsusyNMSSM
rename SNMSSM makefile variable to match the model name
remove useless examples/run_smssm because we have examples/run_softsusy