* Switch http to https where latter exists
* Hopefully restore original permissions
* Add URL updates after include the -L curl option
* Manual corrections to select URL format strings
- [x] add `concretize.lp`, `spack.yaml`, etc. to licensed files
- [x] update all licensed files to say 2013-2021 using
`spack license update-copyright-year`
- [x] appease mypy with some additions to package.py that needed
for oneapi.py
