std: Fix missing stability in sync

* The `sync` module is stable
* The `sync::mpsc` module is stable
* The `Sender::send` method is stable.
* The `Once::doit` method is now removed.
* Deprecated atomic initializers are removed.
* Renamed atomic initializers are now stable.

Author: alexcrichton

src/libcore/atomic.rs

@@ -146,28 +146,18 @@ pub enum Ordering {
 }
 
 /// An `AtomicBool` initialized to `false`.
-#[unstable = "may be renamed, pending conventions for static initalizers"]
+#[stable]
 pub const ATOMIC_BOOL_INIT: AtomicBool =
         AtomicBool { v: UnsafeCell { value: 0 } };
 /// An `AtomicInt` initialized to `0`.
-#[unstable = "may be renamed, pending conventions for static initalizers"]
+#[stable]
 pub const ATOMIC_INT_INIT: AtomicInt =
         AtomicInt { v: UnsafeCell { value: 0 } };
 /// An `AtomicUint` initialized to `0`.
-#[unstable = "may be renamed, pending conventions for static initalizers"]
+#[stable]
 pub const ATOMIC_UINT_INIT: AtomicUint =
         AtomicUint { v: UnsafeCell { value: 0, } };
 
-/// Deprecated
-#[deprecated = "renamed to ATOMIC_BOOL_INIT"]
-pub const INIT_ATOMIC_BOOL: AtomicBool = ATOMIC_BOOL_INIT;
-/// Deprecated
-#[deprecated = "renamed to ATOMIC_INT_INIT"]
-pub const INIT_ATOMIC_INT: AtomicInt = ATOMIC_INT_INIT;
-/// Deprecated
-#[deprecated = "renamed to ATOMIC_UINT_INIT"]
-pub const INIT_ATOMIC_UINT: AtomicUint = ATOMIC_UINT_INIT;
-
 // NB: Needs to be -1 (0b11111111...) to make fetch_nand work correctly
 const UINT_TRUE: uint = -1;
 

src/libstd/sync/mod.rs

@@ -15,7 +15,7 @@
 //! and/or blocking at all, but rather provide the necessary tools to build
 //! other types of concurrent primitives.
 
-#![experimental]
+#![stable]
 
 pub use alloc::arc::{Arc, Weak};
 pub use core::atomic;

src/libstd/sync/mpsc/mod.rs

@@ -163,6 +163,8 @@
 //! }
 //! ```
 
+#![stable]
+
 // A description of how Rust's channel implementation works
 //
 // Channels are supposed to be the basic building block for all other
@@ -565,6 +567,7 @@ impl<T: Send> Sender<T> {
     /// drop(rx);
     /// assert_eq!(tx.send(1i).err().unwrap().0, 1);
     /// ```
+    #[stable]
     pub fn send(&self, t: T) -> Result<(), SendError<T>> {
         let (new_inner, ret) = match *unsafe { self.inner() } {
             Flavor::Oneshot(ref p) => {

src/libstd/sync/once.rs

@@ -121,10 +121,6 @@ impl Once {
             unsafe { self.mutex.destroy() }
         }
     }
-
-    /// Deprecated
-    #[deprecated = "renamed to `call_once`"]
-    pub fn doit<F>(&'static self, f: F) where F: FnOnce() { self.call_once(f) }
 }
 
 #[cfg(test)]