Update NEWS with 2.7.9 release heading (should happen before release to document for users what is on CRAN)
Update NEWS with 2.7.9 release heading (should happen before release to document for users what is on CRAN)

jpritikin/OpenMx,jpritikin/OpenMx,jpritikin/OpenMx,jpritikin/OpenMx,jpritikin/OpenMx,jpritikin/OpenMx