IMPORTANT: If you already use UdmSearch and want to upgrade from 
UdmSearch 2.0 or earlier and keep existing data safe, please fix
database structure. Change dir to /create of UdmSearch distribution.

	shell>mysql udmsearch < alter20-21.txt

or, to upgrade from UdmSearch 1.x, run

	shell>mysql udmsearch < alter19-20.txt
	shell>mysql udmsearch < alter20-21.txt

If you are upgrading from previous version(s), please use once
'indexer -a -m' to reindex all documents properly. Option -m prevents
indexer from sending 'If-Modified-Since' HTTP header.

