Minor - Add documentation about origin of global $cas - refs BT#16484

main/auth/cas/cas_var.inc.php

@@ -7,6 +7,7 @@
 if (api_is_cas_activated()) {
     require_once __DIR__.'/../../../vendor/apereo/phpcas/source/CAS.php';
 
+    // Get the $cas array from app/config/auth.conf.php
     global $cas;
 
     if (is_array($cas) && array_key_exists('debug', $cas) && !empty($cas['debug'])) {

main/inc/lib/template.lib.php

@@ -1132,6 +1132,7 @@ class Template
      */
     public static function displayLoginForm()
     {
+        // Get the $cas array from app/config/auth.conf.php
         global $cas;
 
         if (is_array($cas) && array_key_exists('replace_login_form', $cas) && $cas['replace_login_form'] == true) {