Make casing in the path of EquelleConfig correct for CMake built in rules on Unix.
Make casing in the path of EquelleConfig correct for CMake built in rules on Unix.

atgeirr/equelle,sintefmath/equelle,babrodtk/equelle,atgeirr/equelle,babrodtk/equelle,atgeirr/equelle,sintefmath/equelle,babrodtk/equelle,atgeirr/equelle,sintefmath/equelle,sintefmath/equelle,babrodtk/equelle,sintefmath/equelle,babrodtk/equelle,atgeirr/equelle,atgeirr/equelle,babrodtk/equelle,sintefmath/equelle,babrodtk/equelle,sintefmath/equelle,atgeirr/equelle,sintefmath/equelle,atgeirr/equelle