Merge pull request #369 from hpcugent/v1.11.x

release EasyBuild v1.11.1
fixed impi easyblock to correctly setup CPATH
Revert "fixed impi easyblock to correctly setup CPATH"

This reverts commit ea33033c6dad26f5dec9dfdf20c5926cdd779d43.
fixed impi easyblock to correctly setup CPATH
Merge pull request #371 from pescobar/ipmi-cpath-fix

Ipmi CPATH fix
refactoring + style fixes OpenFOAM easyblock
add ported and enhanced easyblock for MUMPS
pick correct WM_MPLIB value for OpenFOAM-ext with goolf
merge two very similar if-elif-else blocks
get rid of senseless value for $WM_MPLIB in case of OpenMPI build
make sure dependencies are picked up by setting proper premakeopts
Revert "get rid of senseless value for $WM_MPLIB in case of OpenMPI build"

This reverts commit 8bd2fba6363171d2efe767264e48cd03c9027a9d.
add support for building/installing OpenFOAM-Extend