also change the build and update scripts to env bash

build

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/usr/bin/env bash
 
 #  generic build script, for building components (all of them)
 #

update

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/usr/bin/env bash
 
 #  generic update scripts for updating configs and such
 #