Problem compiling OSMesa as part of ParaView 5.10.0-RC1 on Power 9 Architecture

Alan and Ben,

I can confirm the patch works for the OSMesa version, the Mesa version still has issues, as I have reported in similar topic.

https://discourse.paraview.org/t/problem-compiling-mesa-as-part-of-superbuild-of-paraview-5-10-0-rc1-on-power-9-architecture/8254

Thanks,

Joe