misc minor improvements and scripts
diff --git a/releng.control/ant_med_priority.sh b/releng.control/ant_med_priority.sh
index 8a112b5..3c5a701 100644
--- a/releng.control/ant_med_priority.sh
+++ b/releng.control/ant_med_priority.sh
@@ -1,5 +1,5 @@
-#!/bin/sh
-
+#!/usr/bin/env bash
+#
 # remember to leave no slashes on commonVariations in source command,
 # so that users path is used to find it (first). But, path on
 # commonComputedVariables means we expect to execute only our