- remove the old LGPL license headers from all files in Spack
- add SPDX headers to all files
- core and most packages are (Apache-2.0 OR MIT)
- a very small number of remaining packages are LGPL-2.1-only
* Remove py-setuptools dependency from py-spyder (fixes#9205)
* Add constraint on transitive qt dependency to build with webkit
extension (required for this package)
* Update pycodestyle dependency constraints
* reordered dependencies (py-zmq, py-chardet) to confirm to the
ordering in setup.py
