SQL Server fixes: escaping in SQL, and install joomla.sql script.

Remove references to atomic and pkg_joomla in the joomla.sql script.

Define quote style for SQL Server as [ and ].

I was getting "Incorrect syntax near the keyword 'except'" in the menu module, because that's a keyword in SQL Server and it wasn't being quoted correctly (i.e. at all).

Issue tracker: http://joomlacode.org/gf/project/joomla/tracker/?action=TrackerItemEdit&tracker_item_id=30286