(legacy) cleanup radius.inc and rename captiveportal only code to a more distinctive name

src/etc/inc/captiveportal.inc

@@ -39,6 +39,8 @@ require_once("config.inc");
 require_once("functions.inc");
 require_once("filter.inc");
 require_once("radius.inc");
+require_once("captiveportal.radius_accounting.inc");
+require_once("captiveportal.radius_authentication.inc");
 require_once("voucher.inc");
 require_once("script/load_phalcon.php");
 

src/etc/inc/radius_authentication.inc → src/etc/inc/captiveportal.radius_authentication.inc

@@ -40,7 +40,7 @@ RADIUS AUTHENTICATION
 ---------------------
 */
 
-require_once("CHAP.inc");
+require_once("captiveportal.CHAP.inc");
 
 function RADIUS_AUTHENTICATION($username,$password,$radiusservers,$clientip,$clientmac,$ruleno) {
 

src/etc/inc/radius.inc

@@ -46,8 +46,6 @@
 */
 
 require_once("PEAR.inc");
-require_once("radius_authentication.inc");
-require_once("radius_accounting.inc");
 
 /**
 * Client implementation of RADIUS. This are wrapper classes for