core/logging: downgrade some <info> loggings to <debug>

These logging statements are compile time dependent and
add little informational value.

src/main.c

@@ -413,7 +413,7 @@ main (int argc, char *argv[])
 	dbus_glib_global_set_disable_legacy_property_access ();
 
 	nm_log_info (LOGD_CORE, "Read config: %s", nm_config_data_get_config_description (nm_config_get_data (config)));
-	nm_log_info (LOGD_CORE, "WEXT support is %s",
+	nm_log_dbg (LOGD_CORE, "WEXT support is %s",
 #if HAVE_WEXT
 	             "enabled"
 #else

src/settings/plugins/ifcfg-rh/plugin.c

@@ -1139,7 +1139,7 @@ nm_system_config_factory (void)
 			dbus_g_connection_register_g_object (priv->bus,
 			                                     DBUS_OBJECT_PATH,
 			                                     G_OBJECT (singleton));
-		_LOGI ("Acquired D-Bus service %s", DBUS_SERVICE_NAME);
+		_LOGD ("Acquired D-Bus service %s", DBUS_SERVICE_NAME);
 	} else
 		g_object_ref (singleton);