Add mpi launcher script example for IBM PE (poe).

.gitattributes

@@ -312,6 +312,7 @@ tests/test_cksum_nc4.in -text
 tests/test_cksum_service.in -text
 tests/test_grib.c -text
 tests/test_grib.sh -text
+util/mpi_launch_poe -text
 util/serialrun.in -text
 util/sunf95preproc-wrapper -text
 util/sxpreproc-wrapper -text

util/mpi_launch_poe

+#! /usr/bin/ksh93
+if [ x"$1" = x-n ]; then
+   shift
+   MP_PROCS="$1"
+   export MP_PROCS
+   shift
+fi
+MP_HOSTFILE=`mktemp -t hostfile.tmpXXXXXX`
+trap '/bin/rm -f $MP_HOSTFILE' EXIT
+export MP_HOSTFILE
+yes "`hostname`" | head -n ${MP_PROCS-1} >$MP_HOSTFILE
+
+poe "$@"