Auto merge of #6474 - Ms2ger:alloc, r=metajack

Use the heap module through its facade in libstd.



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components/layout/flow_ref.rs

@@ -13,11 +13,11 @@
 use flow::Flow;
 use flow;
 
-use alloc::heap;
 use std::mem;
 use std::ops::{Deref, DerefMut};
 use std::ptr;
 use std::raw;
+use std::rt::heap;
 use std::sync::atomic::{self, Ordering};
 
 #[unsafe_no_drop_flag]

components/layout/lib.rs

@@ -2,7 +2,6 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
-#![feature(alloc)]
 #![feature(append)]
 #![feature(arc_unique)]
 #![feature(box_syntax)]
@@ -40,7 +39,6 @@ extern crate profile_traits;
 extern crate util;
 
 extern crate rustc_serialize;
-extern crate alloc;
 extern crate azure;
 extern crate canvas_traits;
 extern crate clock_ticks;