[svn-r25112] Description:

Revert r25081

Tested on:
    MacOSX/64 10.9.2 (amazon) w/FORTRAN & parallel
    (h5committest not necessary)

tools/h5diff/ph5diff_main.c

@@ -321,6 +321,9 @@ void h5diff_exit(int status)
         status = EXIT_SUCCESS;  /* Reset exit status, since some mpiexec commands generate output on failure status */
     }
 
-    exit(status);
+    /* Always exit(0), since MPI implementations do weird stuff when they
+     *  receive a non-zero exit value. - QAK
+     */
+    exit(0);
 }