* Spades: Add version 3.13.0
In version 3.13.0 the CmakeLists.txt dir is at a different location than
in other versions. Versions up to 3.12.0 are located in "src" whereas
3.13.0 is a level deeper at "assemblers/src".
* Remove git and add new version hash
- 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
* Change path to CMakeLists.txt to be relative to root, not pwd
* Changes requested during code review
* Revert back to old naming of root_cmakelists_dir
* Make relative directory more clear in docs
* Revert change causing build_type AttributeError
* Fix forgotten abs_path var
* Update CLHEP with new relative path
* Update more packages with new root_cmakelists_dir syntax
* hybpiper: new package and spades dependency
* hybpiper: making flkae8 happy
* hybpiper: fixing dependency errors
* fixing python dep type
* removing cmake from spade dependencies
