Rollup merge of rust-lang#22350 - brson:usize, r=Gankro

 cc rust-lang#22240

Author: Manishearth

src/libcore/clone.rs

@@ -61,13 +61,13 @@ macro_rules! clone_impl {
     }
 }
 
-clone_impl! { int }
+clone_impl! { isize }
 clone_impl! { i8 }
 clone_impl! { i16 }
 clone_impl! { i32 }
 clone_impl! { i64 }
 
-clone_impl! { uint }
+clone_impl! { usize }
 clone_impl! { u8 }
 clone_impl! { u16 }
 clone_impl! { u32 }

src/libcore/raw.rs

@@ -58,7 +58,7 @@ use mem;
 #[repr(C)]
 pub struct Slice<T> {
     pub data: *const T,
-    pub len: uint,
+    pub len: usize,
 }
 
 impl<T> Copy for Slice<T> {}