- 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
* Add package for primer3
Built and mildly tested on CentOS 7.
* Convert to MakefilePackage
I always forget about this...
* Set build_directory the easy way
Life's not always complicated. Don't go out of my way
to make it so....
* Fix Flake8 issue