Added parameter for auth module.

etc/ser.cfg

@@ -45,9 +45,14 @@ modparam("usrloc", "db_mode",   0)
 
 # -- auth params --
 # Uncomment if you are using auth module
+#
 #modparam("auth", "secret", "alsdkhglaksdhfkloiwr")
 #modparam("auth", "calculate_ha1", yes)
-
+#
+# If you set "calculate_ha1" parameter to yes (which true in this config), 
+# uncomment also the following parameter)
+#
+#modparam("auth", "password_column", "password")
 
 # -------------------------  request routing logic -------------------