https://bugs.gentoo.org/801682
rename MPI 1.0 to 3.0+ functions:
- MPI_Errhandler_set -> MPI_Comm_set_errhandler

--- a/src/lib/util/group/memmtmpi.cc
+++ b/src/lib/util/group/memmtmpi.cc
@@ -241,8 +241,8 @@
   MPI_Comm_dup(comm, &comp_comm_);
   MPI_Comm_dup(comm, &comm_comm_);
 
-  MPI_Errhandler_set(comp_comm_, MPI_ERRORS_ARE_FATAL);
-  MPI_Errhandler_set(comm_comm_, MPI_ERRORS_ARE_FATAL);
+  MPI_Comm_set_errhandler(comp_comm_, MPI_ERRORS_ARE_FATAL);
+  MPI_Comm_set_errhandler(comm_comm_, MPI_ERRORS_ARE_FATAL);
 
   serial_ = 0;
   req_tag_ = 15001;
--- a/src/lib/util/group/messmpi.cc
+++ b/src/lib/util/group/messmpi.cc
@@ -129,7 +129,7 @@
   if (keyval->booleanvalue("errors_return")) {
       if (me()==0)
           ExEnv::outn() << indent << "MPIMessageGrp: errors_return is true" << endl;
-      MPI_Errhandler_set(commgrp, MPI_ERRORS_RETURN);
+      MPI_Comm_set_errhandler(commgrp, MPI_ERRORS_RETURN);
     }
 
   if (debug_) {
@@ -200,7 +200,7 @@
   MPI_Comm_dup(comm, &commgrp);
   global_commgrp = commgrp;
 
-  MPI_Errhandler_set(commgrp, MPI_ERRORS_ARE_FATAL);
+  MPI_Comm_set_errhandler(commgrp, MPI_ERRORS_ARE_FATAL);
 
    if (!nmpi_grps) {
       threadgrp = ThreadGrp::get_default_threadgrp();