auto merge of #15591 : aturon/rust/box-cell-stability, r=alexcrichton

This PR is the outcome of the library stabilization meeting for the
`liballoc::owned` and `libcore::cell` modules.

Aside from the stability attributes, there are a few breaking changes:

* The `owned` modules is now named `boxed`, to better represent its
  contents. (`box` was unavailable, since it's a keyword.) This will
  help avoid the misconception that `Box` plays a special role wrt
  ownership.

* The `AnyOwnExt` extension trait is renamed to `BoxAny`, and its `move`
  method is renamed to `downcast`, in both cases to improve clarity.

* The recently-added `AnySendOwnExt` extension trait is removed; it was
  not being used and is unnecessary.

[breaking-change]

11 files changed, 12 insertions, 12 deletions

diff --git a/src/libstd/io/fs.rs b/src/libstd/io/fs.rs
index 74ab19d0aa6..449ad6fa0da 100644
--- a/src/libstd/io/fs.rs
+++ b/src/libstd/io/fs.rs
@@ -62,7 +62,7 @@ use iter::Iterator;
 use kinds::Send;
 use libc;
 use option::{Some, None, Option};
-use owned::Box;
+use boxed::Box;
 use path::{Path, GenericPath};
 use path;
 use result::{Err, Ok};
diff --git a/src/libstd/io/mod.rs b/src/libstd/io/mod.rs
index 4ef2e51fcf0..db4df7a8a6f 100644
--- a/src/libstd/io/mod.rs
+++ b/src/libstd/io/mod.rs
@@ -229,7 +229,7 @@ use mem::transmute;
 use ops::{BitOr, BitAnd, Sub, Not};
 use option::{Option, Some, None};
 use os;
-use owned::Box;
+use boxed::Box;
 use result::{Ok, Err, Result};
 use rt::rtio;
 use slice::{Vector, MutableVector, ImmutableVector};
diff --git a/src/libstd/io/net/tcp.rs b/src/libstd/io/net/tcp.rs
index 49322098348..642654ba6ed 100644
--- a/src/libstd/io/net/tcp.rs
+++ b/src/libstd/io/net/tcp.rs
@@ -29,7 +29,7 @@ use io::{Reader, Writer, Listener, Acceptor};
 use from_str::FromStr;
 use kinds::Send;
 use option::{None, Some, Option};
-use owned::Box;
+use boxed::Box;
 use rt::rtio::{IoFactory, LocalIo, RtioSocket, RtioTcpListener};
 use rt::rtio::{RtioTcpAcceptor, RtioTcpStream};
 use rt::rtio;
diff --git a/src/libstd/io/net/udp.rs b/src/libstd/io/net/udp.rs
index 21903eb2643..5f7563e7467 100644
--- a/src/libstd/io/net/udp.rs
+++ b/src/libstd/io/net/udp.rs
@@ -19,7 +19,7 @@ use clone::Clone;
 use io::net::ip::{SocketAddr, IpAddr};
 use io::{Reader, Writer, IoResult, IoError};
 use kinds::Send;
-use owned::Box;
+use boxed::Box;
 use option::Option;
 use result::{Ok, Err};
 use rt::rtio::{RtioSocket, RtioUdpSocket, IoFactory, LocalIo};
diff --git a/src/libstd/io/net/unix.rs b/src/libstd/io/net/unix.rs
index c5ddda9945d..5e7c4214977 100644
--- a/src/libstd/io/net/unix.rs
+++ b/src/libstd/io/net/unix.rs
@@ -30,7 +30,7 @@ use c_str::ToCStr;
 use clone::Clone;
 use io::{Listener, Acceptor, Reader, Writer, IoResult, IoError};
 use kinds::Send;
-use owned::Box;
+use boxed::Box;
 use rt::rtio::{IoFactory, LocalIo, RtioUnixListener};
 use rt::rtio::{RtioUnixAcceptor, RtioPipe};
 
diff --git a/src/libstd/io/pipe.rs b/src/libstd/io/pipe.rs
index a968f41a915..c476a99fee9 100644
--- a/src/libstd/io/pipe.rs
+++ b/src/libstd/io/pipe.rs
@@ -20,7 +20,7 @@ use prelude::*;
 use io::{IoResult, IoError};
 use libc;
 use os;
-use owned::Box;
+use boxed::Box;
 use rt::rtio::{RtioPipe, LocalIo};
 
 /// A synchronous, in-memory pipe.
diff --git a/src/libstd/io/process.rs b/src/libstd/io/process.rs
index 6ef73023779..07574b72645 100644
--- a/src/libstd/io/process.rs
+++ b/src/libstd/io/process.rs
@@ -21,7 +21,7 @@ use io::{IoResult, IoError};
 use io;
 use libc;
 use mem;
-use owned::Box;
+use boxed::Box;
 use rt::rtio::{RtioProcess, ProcessConfig, IoFactory, LocalIo};
 use rt::rtio;
 use c_str::CString;
diff --git a/src/libstd/io/signal.rs b/src/libstd/io/signal.rs
index 4a7655a63ce..d46f437cddd 100644
--- a/src/libstd/io/signal.rs
+++ b/src/libstd/io/signal.rs
@@ -26,7 +26,7 @@ use iter::Iterator;
 use kinds::Send;
 use mem::drop;
 use option::{Some, None};
-use owned::Box;
+use boxed::Box;
 use result::{Ok, Err};
 use rt::rtio::{IoFactory, LocalIo, RtioSignal, Callback};
 use slice::ImmutableVector;
diff --git a/src/libstd/io/stdio.rs b/src/libstd/io/stdio.rs
index cdd083202e0..45c084b3459 100644
--- a/src/libstd/io/stdio.rs
+++ b/src/libstd/io/stdio.rs
@@ -35,7 +35,7 @@ use iter::Iterator;
 use kinds::Send;
 use libc;
 use option::{Option, Some, None};
-use owned::Box;
+use boxed::Box;
 use result::{Ok, Err};
 use rt;
 use rt::local::Local;
diff --git a/src/libstd/io/timer.rs b/src/libstd/io/timer.rs
index 432461c4606..1c9e428dcad 100644
--- a/src/libstd/io/timer.rs
+++ b/src/libstd/io/timer.rs
@@ -20,7 +20,7 @@ and create receivers which will receive notifications after a period of time.
 use comm::{Receiver, Sender, channel};
 use io::{IoResult, IoError};
 use kinds::Send;
-use owned::Box;
+use boxed::Box;
 use rt::rtio::{IoFactory, LocalIo, RtioTimer, Callback};
 
 /// A synchronous timer object
diff --git a/src/libstd/io/util.rs b/src/libstd/io/util.rs
index 2acf12b76c0..e928323030c 100644
--- a/src/libstd/io/util.rs
+++ b/src/libstd/io/util.rs
@@ -13,7 +13,7 @@
 use prelude::*;
 use cmp;
 use io;
-use owned::Box;
+use boxed::Box;
 use slice::bytes::MutableByteVector;
 
 /// Wraps a `Reader`, limiting the number of bytes that can be read from it.
@@ -263,7 +263,7 @@ impl<T: Iterator<u8>> Reader for IterReader<T> {
 mod test {
     use io::{MemReader, MemWriter, BufReader};
     use io;
-    use owned::Box;
+    use boxed::Box;
     use super::*;
     use prelude::*;