- 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 mofem-cephas package
* add mofem fracture module
* add user modules build and fracture modyle
* add minimal surface module
* add slepc variant
* bump mofem core lib version
* bump mofem core lib version
* bump version
* fix bug
* set upper bound to petsc version and other chanes
* fix indentation
* add minimal med file installation
* chcekc with flake8 and installation with spack packages
* add variants to med package
* upper bound to adol-c and remove obsolete internal package install
* fix basic module install
* module install from external source in extended prefix
* remove obsolte code and reverse to variant doxygen
* fix git adress
* improve packaging for mofem users modules
* fix flake8
* move dependencies after variants
* move root_cmakelists_dir right before cmake_args
* remove unused variants
* use append for single element
* replace root_cmakelists_dir
* use install_tree instead copy tree
* simplify code
* remove phase and mkdirp
* add run tests
* instal ext modules to ext_users_modules directory
* move version below url
* simplify directory name
* use underscore in variant name
* remove unused variable
* fix link to blas libs
* add missing boost dependence
* fix problem with copying module source code
* change variant name form doxygen to docs
* add expanded description
* make installation consistent with spack
* fix flake8
* make extensions installed
* code comments and minor corrections
* make slepc variant false by default
