Simplify logic in Spec.normalize()
Simplify logic in Spec.normalize()

TheTimmy/spack,mfherbst/spack,tmerrick1/spack,TheTimmy/spack,lgarren/spack,LLNL/spack,skosukhin/spack,iulian787/spack,iulian787/spack,krafczyk/spack,skosukhin/spack,iulian787/spack,TheTimmy/spack,LLNL/spack,LLNL/spack,lgarren/spack,EmreAtes/spack,matthiasdiener/spack,tmerrick1/spack,mfherbst/spack,EmreAtes/spack,EmreAtes/spack,lgarren/spack,EmreAtes/spack,LLNL/spack,krafczyk/spack,LLNL/spack,krafczyk/spack,skosukhin/spack,mfherbst/spack,mfherbst/spack,skosukhin/spack,tmerrick1/spack,skosukhin/spack,mfherbst/spack,TheTimmy/spack,TheTimmy/spack,lgarren/spack,lgarren/spack,matthiasdiener/spack,iulian787/spack,EmreAtes/spack,matthiasdiener/spack,matthiasdiener/spack,krafczyk/spack,tmerrick1/spack,iulian787/spack,krafczyk/spack,matthiasdiener/spack,tmerrick1/spack