libharu: Make dependencies on zlib and libpng explicit (#6682)
libharu: Make dependencies on zlib and libpng explicit (#6682)


tmerrick1/spack,iulian787/spack,LLNL/spack,krafczyk/spack,EmreAtes/spack,krafczyk/spack,LLNL/spack,EmreAtes/spack,matthiasdiener/spack,mfherbst/spack,tmerrick1/spack,EmreAtes/spack,LLNL/spack,LLNL/spack,mfherbst/spack,krafczyk/spack,tmerrick1/spack,matthiasdiener/spack,iulian787/spack,matthiasdiener/spack,tmerrick1/spack,krafczyk/spack,mfherbst/spack,EmreAtes/spack,krafczyk/spack,mfherbst/spack,matthiasdiener/spack,EmreAtes/spack,tmerrick1/spack,iulian787/spack,iulian787/spack,LLNL/spack,mfherbst/spack,matthiasdiener/spack,iulian787/spack