Add bo-disabled from Oscar

This is a reapplication of bo-disabled from issue #9.

I only made the original commit apply against the current codebase.

Commit found at https://github.com/OscarF/bindonce/commit/7e4685b33b57cdaebfe1447db53cb421fd2db4d9

Original commit information from git-am:
	From 7e4685b33b57cdaebfe1447db53cb421fd2db4d9 Mon Sep 17 00:00:00 2001
	From: Oscar <oscar.franzen@advisa.se>
	Date: Mon, 15 Jul 2013 18:35:59 +0200
	Subject: [PATCH] Added bo-disabled