Manual merge of runtest fixes in donut and new account test def add in master.

commit 8a101cb057c1d1d5397b988b6a3f4c3add879008
Author: Brett Chabot <brettchabot@google.com>
Date:   Tue May 5 12:56:39 2009 -0700

    runtest.py bug fixes.

    Improved error handling, and added support for "size" and "package" arguments.
    Removed deprecated runtest shell script.