Add petsc and netcdf-fortran

testing/packages/netcdf-fortran/excessive_linking.patch

testing/packages/netcdf-fortran/logging.patch

testing/packages/netcdf-fortran/nag_testing.patch

testing/packages/netcdf-fortran/no_parallel_build.patch

testing/packages/netcdf-fortran/package.py

testing/packages/petsc/disable-DEPRECATED_ENUM.diff

testing/packages/petsc/macos-clang-8.1.0.diff

testing/packages/petsc/package.py

testing/packages/petsc/pkg-config-3.7.6-3.8.4.diff

.../packages/petsc/revert-3.18.0-ver-format-for-dealii.patch

testing/packages/petsc/xcode_stub_out_of_sync.patch

testing/packages/petsc/xlc-test-3.10.1.diff

testing/packages/petsc/xlf_fix-dup-petscfecreate.patch