Add package for Sandia QThreads.
Add package for Sandia QThreads.

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