module_k/p_usrloc better documentation

modules_k/p_usrloc/README

@@ -205,14 +205,15 @@ Chapter 1. User's Guide
        recovers, the module makes sure that no stale contacts are returned
        from it.
 
-   Write queries are replicated to two databases, depending on some
-   distribution keys, e.g. the username and domain of some subscribers.
-   Its main field of application is for storing and retrieving location
-   data. The actual database for this subscriber is choosen from a set
-   that is specified in the master database. Read queries are executed on
-   one database of the set. If this database is not available, the other
-   database would be used. This failure is recorded in the master
-   database.
+   Write queries are replicated to two or more databases, depending on
+   some distribution keys, e.g. the username and domain the subscribers.
+   The number of databases used for replication is configurable at compile
+   time by modifying the DB_NUM define. Its main field of application is
+   for storing and retrieving location data. The actual database for this
+   subscriber is choosen from a set that is specified in the master
+   database. Read queries are executed on one database of the set. If this
+   database is not available, the other database would be used. This
+   failure is recorded in the master database.
 
    Connections to the distributed databases are setup prior the actual
    query is executed. The module maintains a cache of the database handles

modules_k/p_usrloc/doc/p_usrloc_user.xml

@@ -39,8 +39,9 @@
 	<para>
 	</para>
 
-	<para>Write queries are replicated to two databases, depending on some
-	distribution keys, e.g. the username and domain of some subscribers. 
+	<para>Write queries are replicated to two or more databases, depending on some
+	distribution keys, e.g. the username and domain the subscribers. The number of databases
+	used for replication is configurable at compile time by modifying the DB_NUM define.
 	Its main field of application is for storing and retrieving location data. The actual
 	database for this subscriber is choosen from a set that is specified in the master
 	database. Read queries are executed on one database of the set. If this database is