Stabilize clone

This patch marks `clone` stable, as well as the `Clone` trait, but
leaves `clone_from` unstable. The latter will be decided by the beta.

The patch also marks most manual implementations of `Clone` as stable,
except where the APIs are otherwise deprecated or where there is
uncertainty about providing `Clone`.

3 files changed, 3 insertions, 3 deletions

diff --git a/src/liballoc/arc.rs b/src/liballoc/arc.rs
index e909947ab08..c3bd5c4157c 100644
--- a/src/liballoc/arc.rs
+++ b/src/liballoc/arc.rs
@@ -132,7 +132,7 @@ pub fn weak_count<T>(this: &Arc<T>) -> uint { this.inner().weak.load(atomic::Seq
 #[experimental]
 pub fn strong_count<T>(this: &Arc<T>) -> uint { this.inner().strong.load(atomic::SeqCst) }
 
-#[unstable = "waiting on stability of Clone"]
+#[stable]
 impl<T> Clone for Arc<T> {
     /// Duplicate an atomically reference counted wrapper.
     ///
diff --git a/src/liballoc/boxed.rs b/src/liballoc/boxed.rs
index 879a8cc6951..f0c96196b78 100644
--- a/src/liballoc/boxed.rs
+++ b/src/liballoc/boxed.rs
@@ -57,7 +57,7 @@ impl<T> Default for Box<[T]> {
     fn default() -> Box<[T]> { box [] }
 }
 
-#[unstable]
+#[stable]
 impl<T: Clone> Clone for Box<T> {
     /// Returns a copy of the owned box.
     #[inline]
diff --git a/src/liballoc/rc.rs b/src/liballoc/rc.rs
index 0257c640d3c..b22c366e29d 100644
--- a/src/liballoc/rc.rs
+++ b/src/liballoc/rc.rs
@@ -413,7 +413,7 @@ impl<T> Drop for Rc<T> {
     }
 }
 
-#[unstable = "Clone is unstable."]
+#[stable]
 impl<T> Clone for Rc<T> {
     /// Makes a clone of the `Rc<T>`.
     ///