--bt5_path cmdline option now allows to specify the URL of a running template
tool. For example:

  $ runUnitTest.py --bt5_path='http://zope:zope@localhost:9001/erp5/portal_templates',/fallback_fs_path/bt5 testBug

This will try to download non-deleted built business templates, with the highest revision number.

--bt5_path is also changed to apply to core BT during creation of the site.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@33393 20353a03-c40f-0410-a6d1-a30d3c3de9de