Co-authored-by: Jaakko Luttinen <jaakko.luttinen@iki.fi>
Most of changes are:
* separate packages for different openmodelica components,
* qt4 -> qt5,
* patches to instruct the OMEdit wrapper with stdenv executables
location,
* adoption of #89731 and #109595,
* openblas -> blas, lapack according to #83888,
* parallel building,
* getting rid of spurious build phases,
* correct the license,
* cross-compilation,
* forcing compiler to clang++ according to OM build recommendations,
* drop of pangox_compat according to #75909 and #76412,
* better dependencies, and more.
5c8561f11a