This patch is needed because the default shell on Solaris has issues. 
Still needed for ksh93 on S11 and S12.

diff --git a/python/mozbuild/mozbuild/mozconfig_loader b/python/mozbuild/mozbuild/mozconfig_loader
--- a/python/mozbuild/mozbuild/mozconfig_loader
+++ b/python/mozbuild/mozbuild/mozconfig_loader
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 # This Source Code Form is subject to the terms of the Mozilla Public
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.