 Patch trilinos for xlf when using clang (#8391)
 Patch trilinos for xlf when using clang (#8391)

* Add patching for xlf when %clang.  Changes are effective only when Fortran compiler is 'XL'.
* Use the right version for trilinos when patching for seacas.
iulian787/spack,LLNL/spack,krafczyk/spack,iulian787/spack,matthiasdiener/spack,krafczyk/spack,matthiasdiener/spack,krafczyk/spack,LLNL/spack,mfherbst/spack,mfherbst/spack,LLNL/spack,iulian787/spack,krafczyk/spack,mfherbst/spack,matthiasdiener/spack,iulian787/spack,matthiasdiener/spack,mfherbst/spack,iulian787/spack,LLNL/spack,LLNL/spack,mfherbst/spack,matthiasdiener/spack,krafczyk/spack