Overview of the custom EasyBlocks.

• added by d.alvarez
• needed because it is the basic support for the MPI settings modules
• can not be removed

• added by j.reuter
• needed because Adds minor changes to better handle new nvidia-compilers toochain at JSC, not yet upstreamed
• difference compared to upstream allow to still use internal components for nvidia-compilers, fix issue with CUDA versions (see #4024)
• can not be removed until all changes are merged upstream

• added by s.achilles
• needed because we need to allow multiple license files
• difference compared to upstream the aforementioned parameter
• can not be removed at least until that option is merged upstream

• added by m.cakircali
• needed because there is no support to install code_saturn upstream
• can not be removed at least until the easyblock is added upstream

• added_by th.mueller
• needed because support for libvori; alternative versions of dbcsr; contains loads of widely obsolete stuff; is essentially a highly non-portable easyblock working only with intel and gnu (which I am not going to change!); running the tests will not work within an eb environment - at least not sensibly.
• difference compared to upstream no support for libvori
• can not be removed

• added_by th.mueller
• needed because tbd
• difference compared to upstream tbd
• can not be removed

• added_by d.alvarez
• needed because to autodetect CUDA and support CUDA compute capabilities
• difference compared to upstream upstream doesn't have such a feature
• can not be removed until merged upstream (easybuilders/easybuild-easyblocks#2673)

• added_by j.meinke
• needed because allow to optionally disable Python package
• difference compared to upstream upstream doesn't have such a feature
• can not be removed until merged upstream

• added_by r.partzsch
• needed because allow to optionally disable CUDA
• difference compared to upstream upstream doesn't have such feature
• can not be removed until merged upstream

• added by j.goebbert
• needed because different approaches to handling Julia and its packages, needs unification
• difference compared to upstream upstream does not have an EasyBlock for Julia, and its generic EasyBlocks for JuliaPackge and JuliaBundle differ significantly.
• can not be removed once upstream approach has been evaluated and decided if we want to upstream our efforts

• added by th.mueller
• needed because Optionally remove C++ interface (from 2.11 onwards) and ensure shared library builds
• difference compared to upstream Added CMake flags and additional option with_cxx
• can not be removed until upstreamed

• added by d.alvarez
• needed because --with-thread-package=pthreads is added
• difference compared to upstream the aforementioned parameter
• can not be removed

• added by d.alvarez
• needed because we custom-install the NVIDIA driver libraries in the EB stack
• can not be removed at least until the easyblock is added upstream

• added by s.achilles
• needed because the check for mpirun should be optional
• difference compared to upstream making that check optional
• can not be removed until the check is made optional upstream (PR: #2788)

• added by r.partzsch
• needed because tbd
• difference compared to upstream tbd
• can not be removed tbd

• added by m.knobloch
• needed because not available upstream
• difference compared to upstream not available upstream
• can not be removed at least until merged upstream

• added by j.reuter
• needed because changes not yet in EasyBuild release
• difference compared to upstream support for additional libraries
• can not be removed until EasyBuild v5.2.1/v5.3.0