Recover the old patching order for packages. (#7558)
Recover the old patching order for packages. (#7558)

fixes #7543

This is very likely an hot-fix, while a more permanent solution is
needed. See this comment for more insight:

 https://github.com/spack/spack/pull/7193#discussion_r176448831

on the problem.
tmerrick1/spack,EmreAtes/spack,EmreAtes/spack,EmreAtes/spack,LLNL/spack,LLNL/spack,matthiasdiener/spack,LLNL/spack,iulian787/spack,iulian787/spack,mfherbst/spack,tmerrick1/spack,matthiasdiener/spack,krafczyk/spack,krafczyk/spack,iulian787/spack,LLNL/spack,tmerrick1/spack,matthiasdiener/spack,mfherbst/spack,matthiasdiener/spack,EmreAtes/spack,krafczyk/spack,mfherbst/spack,iulian787/spack,LLNL/spack,krafczyk/spack,mfherbst/spack,matthiasdiener/spack,krafczyk/spack,tmerrick1/spack,iulian787/spack,EmreAtes/spack,tmerrick1/spack,mfherbst/spack