Replace GCC-specific warning flags with valid PGI flags (#3137)
Replace GCC-specific warning flags with valid PGI flags (#3137)


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