Squashed commit of the following:

commit 3a5429d0d849f2b6fcbb28941b9d5929f820efe6
Author: Albert Louis Rossi <arossi@otfrid.fnal.gov>
Date:   Wed Apr 3 08:54:41 2013 -0500

    module: billing unit test

    Removing problematic unit test.  This test really doesn't test much anyway.

    Target: trunk
    Require-book: no
    Require-notes: no
    Acked-by: Gerd
    Patch: http://rb.dcache.org/r/5394
Merge branch 'master' of https://github.com/dCache/dcache