* Move opengl related section in SearchInstalledSoftware.cmake

* Adapt wording sugestions by Axel about opengl

Co-authored-by: Axel Naumann <Axel.Naumann@cern.ch>

* Adapt wording sugestions by Axel about status message for disabling opengl

Co-authored-by: Axel Naumann <Axel.Naumann@cern.ch>

Co-authored-by: Axel Naumann <Axel.Naumann@cern.ch>