remove contextual compatiblity, and require functions-compat instead

git-svn-id: https://develop.svn.wordpress.org/trunk@1777 602fd350-edb4-49c9-b593-d223f7449a82

wp-includes/functions.php

@@ -1,17 +1,13 @@
 <?php
 
+require_once(dirname(__FILE__).'/functions-compat.php');
+
 if (!function_exists('_')) {
 	function _($string) {
 		return $string;
 	}
 }
 
-if (!function_exists('floatval')) {
-	function floatval($string) {
-		return ((float) $string);
-	}
-}
-
 function get_profile($field, $user = false) {
 	global $wpdb;
 	if (!$user)