Add "--parallel-program=X" option to test runner.

This is done to run test programs in parallel that are not simulations,
and therefore do not produce the standard (for this module) pattern of
outputs for comparison.

tests/run-vtu-test.sh

@@ -109,6 +109,21 @@ case "$TEST_TYPE" in
         exit 0
         ;;
 
+    "--parallel-program="*)
+        NUM_PROCS="${TEST_TYPE/--parallel-program=/}"
+
+        echo "executing \"mpirun -np \"$NUM_PROCS\" $TEST_BINARY $TEST_ARGS\""
+        mpirun -np "$NUM_PROCS" "$TEST_BINARY" $TEST_ARGS | tee "test-$RND.log"
+        RET="${PIPESTATUS[0]}"
+        if test "$RET" != "0"; then
+            echo "Executing the binary failed!"
+            rm "test-$RND.log"
+            exit 1
+        fi
+
+        exit 0
+        ;;
+
     "--parallel-simulation="*)
         NUM_PROCS="${TEST_TYPE/--parallel-simulation=/}"