/bin/{bash => sh} to support system with only sh installed

- e.g. FreeBSD
- Nothing in the scripts actually needs BASH anyway

test/test-rmtrail

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 #
 #  Copyright (C) 2010 Mike Gerwitz
 #

tools/combine

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 #
 #  Copyright (C) 2010 Mike Gerwitz
 #

tools/rmtrail

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 #
 # Removes trailing commas from array and object declarations (certain browsers,
 # such as earlier versions of IE, do not parse trailing commas correctly)