- 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
* added perl-star-fusion and perl-intervaltree
* added perl-star-fusion and all dependencies
* changes
* made changes as requested to perl-star-fusion dependencies
* changed perl-intervaltree dependency
* changes to star fusion
* now using perl properly