2003-01-19  Gonzalo Paniagua Javier <gonzalo@gnome-db.org>

	* libgda/gda-client.c: use g_hash_table_foreach_remove instead of
	removing the hash entry inside remove_provider_in_hash (tracked down
	with Rodrigo).

	* libgda/gda-connection.c:
	* providers/freetds/gda-freetds-provider.c:
	* providers/mysql/gda-mysql-provider.c:
	* providers/mysql/libmain.c:
	* providers/oracle/gda-oracle-provider.c:
	* providers/oracle/libmain.c:
	* providers/sybase/gda-sybase-provider.c: unified the parameter name
	for the user (USER instead of USERNAME).

	* providers/postgres/gda-postgres-provider.c: 'username' and
	'password' arguments take precedence over the ones in the provider
	configuration.