5.3 버전 내용 적용

bbs/login.php

@@ -1,6 +1,10 @@
 <?php
 include_once('./_common.php');
 
+if( function_exists('social_check_login_before') ){
+    $social_login_html = social_check_login_before();
+}
+
 $g5['title'] = '로그인';
 include_once('./_head.sub.php');