rc: stop depending on config.lib.inc instead of config.inc

Looks like the reason for this file has gone.  We shall merge
the code into config.inc soon.

(cherry picked from commit cde9b8f8)

src/etc/rc.initial.defaults

@@ -28,7 +28,7 @@
 */
 
 require_once("util.inc");
-require_once("config.lib.inc");
+require_once("config.inc");
 require_once("system.inc");
 
 $fp = fopen('php://stdin', 'r');

src/etc/rc.initial.halt

@@ -28,8 +28,8 @@
     POSSIBILITY OF SUCH DAMAGE.
 */
 
-require_once("config.lib.inc");
 require_once("util.inc");
+require_once("config.inc");
 require_once("system.inc");
 
 $fp = fopen('php://stdin', 'r');

src/etc/rc.initial.reboot

@@ -27,8 +27,8 @@
     POSSIBILITY OF SUCH DAMAGE.
 */
 
-require_once("config.lib.inc");
 require_once("util.inc");
+require_once("config.inc");
 require_once("system.inc");
 
 $fp = fopen('php://stdin', 'r');

src/opnsense/scripts/remote_backup.php

 #!/usr/local/bin/php
 <?php
-/**
- * Backup to Google Drive (if configured)
-*/
+
 require_once("util.inc");
-require_once("config.lib.inc");
+require_once("config.inc");
 
+/* Backup to Google Drive (if configured) */
 backup_to_google_drive();