Mesa issue at runtime with intel 18 compiler, PV 5.5.2, on LANL TOSS2 machines

Paul is encountering a pvbatch runtime error with the new PV 5.5.2 builds with an external MESA. Intel 17 compiled version works fine, Intel 18 version results in:

vtkOSOpenGLRenderWindow (0x5253580): GL version 2.1 with the gpu_shader4 extension is not supported by your graphics driver but is required for the new OpenGL rendering backend. Please update your OpenGL driver. If you are using Mesa please make sure you have version 10.6.5 or later and make sure your driver in Mesa supports OpenGL 3.2.