Add conflicts statement for Python-3.6.7+ and Intel compiler
Add conflicts statement for Python-3.6.7+ and Intel compiler

Python-3.6.7 and up do not build with the Intel compiler

- https://bugs.python.org/issue35473
- https://bugs.python.org/issue37415

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