Bug 452418 - change test scripts to use bash explicitly, as some of the code doesn't work in dash, which is the default /bin/sh in Ubuntu Hardy. Patch by gerv; rs=ted.

tools/test-harness/xpcshell-simple/test_all.sh

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 #
 # vim:set ts=2 sw=2 sts=2 et:
 #

tools/test-harness/xpcshell-simple/test_one.sh

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 #
 # vim:set ts=2 sw=2 sts=2 et:
 #