This commit explicitly sets `libdir`. This is necessary because different systems use different defaults.
This commit explicitly sets `libdir`. This is necessary because different
systems use different defaults.

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