v3.0.x: Conform MPIR_Breakpoint to MPIR standard.#6988

jsquyres merged 2 commits intoopen-mpi:v3.0.xopen-mpi/ompi:v3.0.xfrom

awlauria:fix_mpir_standard_v3.0.xawlauria/ompi:fix_mpir_standard_v3.0.xCopy head branch name to clipboard