Phist 1.7.4 (#9996)
Phist 1.7.4 (#9996)

* packages/phist: new version 1.7.4 with new variant 'host' to enable/disable host-specific optimizations.

LLNL/spack,LLNL/spack,iulian787/spack,LLNL/spack,iulian787/spack,LLNL/spack,iulian787/spack,iulian787/spack,LLNL/spack,iulian787/spack