* GDL: python integration fixes
* renamed python-related variants to follow the convention
* building the Python module requires patches currently targetting 0.9.8 othwerwise asking for the Python module *only* builds the Pyhton module
* building the python module also requires patching the vendored (with the GDL) antlr to be built as a shared library
* Typo
Co-Authored-By: rmsds <ricardo.d.silva@gmail.com>
* Rename embed-python variant to embed_python
- 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
