Add isize, usize modules, deprecate int, uint modules

This PR introduces `isize` and `usize` modules to `core` and `std`, and
deprecates the existing `int` and `uint` modules. The rustdoc primitive
type links now point to these new modules.

Due to deprecation this is a:

[breaking-change]

1 files changed, 22 insertions, 0 deletions

diff --git a/src/libstd/num/isize.rs b/src/libstd/num/isize.rs
new file mode 100644
index 00000000000..22395a1c0ff
--- /dev/null
+++ b/src/libstd/num/isize.rs
@@ -0,0 +1,22 @@
+// Copyright 2012-2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+//! Operations and constants for pointer-sized signed integers (`isize` type)
+//!
+//! This type was recently added to replace `int`. The rollout of the
+//! new type will gradually take place over the alpha cycle along with
+//! the development of clearer conventions around integer types.
+
+#![stable]
+#![doc(primitive = "isize")]
+
+pub use core::isize::{BITS, BYTES, MIN, MAX};
+
+int_module! { isize }