cmake EL_HAVE_PDSYNGST_POST examples

elemental/Elemental cmake/external_projects/ElMath/ScaLAPACK.cmake :76 

elseif(HAVE_BLAS AND HAVE_LAPACK AND 
           EL_HAVE_PDSYNGST_POST AND EL_HAVE_CSYS2BLACS)

elemental/Elemental cmake/external_projects/ElMath/ScaLAPACK.cmake :173 

elseif(HAVE_BLAS AND HAVE_LAPACK AND 
               EL_HAVE_PDSYNGST_POST AND EL_HAVE_CSYS2BLACS)