VbzCart/catalog/building

Version
This is a tricky process which has been revised several times.
 * 2010 version: see VbzCart/code/maint/build-cat.php
 * 2009 version - SQL statements executed directly from PHP code
 * 2008 version - started in 2007 - a set of stored queries called from a stored procedure
 * 2006 version