cosmetics in debug message

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@37519 15284696-431f-4ddb-bdfa-cd5b030d7da7

lib/python/vector.py

@@ -169,7 +169,7 @@ def vector_db_select(map, layer = 1, **kwargs):
     if kwargs.has_key('columns'):
         if key not in kwargs['columns'].split(','):
             # add key column if missing
-            info("Adding key column to the output")
+            debug("Adding key column to the output")
             kwargs['columns'] += ',' + key
     
     ret = read_command('v.db.select',