Undo some recent changes to GREML derivatives.
Undo some recent changes to GREML derivatives.

jpritikin/OpenMx,mhunter1/OpenMx,jpritikin/OpenMx,JuKa87/OpenMx,mhunter1/OpenMx,JuKa87/OpenMx,mhunter1/OpenMx,mhunter1/OpenMx,JuKa87/OpenMx,JuKa87/OpenMx,jpritikin/OpenMx,JuKa87/OpenMx,JuKa87/OpenMx,jpritikin/OpenMx,mhunter1/OpenMx,jpritikin/OpenMx,mhunter1/OpenMx,jpritikin/OpenMx