Implement RFC 580

This commit implements RFC 580 by renaming:

* DList -> LinkedList
* Bitv -> BitVec
* BitvSet -> BitSet
* RingBuf -> VecDeque

More details are in [the
RFC](rust-lang/rfcs#580)

[breaking-change]

src/libcollections/btree/map.rs

@@ -29,7 +29,7 @@ use core::ops::{Index, IndexMut};
 use core::{iter, fmt, mem};
 use Bound::{self, Included, Excluded, Unbounded};
 
-use ring_buf::RingBuf;
+use vec_deque::VecDeque;
 
 use self::Continuation::{Continue, Finished};
 use self::StackOp::*;
@@ -75,7 +75,7 @@ pub struct BTreeMap<K, V> {
 
 /// An abstract base over-which all other BTree iterators are built.
 struct AbsIter<T> {
-    traversals: RingBuf<T>,
+    traversals: VecDeque<T>,
     size: usize,
 }
 
@@ -1189,7 +1189,7 @@ impl<K, V> BTreeMap<K, V> {
     pub fn iter(&self) -> Iter<K, V> {
         let len = self.len();
         // NB. The initial capacity for ringbuf is large enough to avoid reallocs in many cases.
-        let mut lca = RingBuf::new();
+        let mut lca = VecDeque::new();
         lca.push_back(Traverse::traverse(&self.root));
         Iter {
             inner: AbsIter {
@@ -1221,7 +1221,7 @@ impl<K, V> BTreeMap<K, V> {
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn iter_mut(&mut self) -> IterMut<K, V> {
         let len = self.len();
-        let mut lca = RingBuf::new();
+        let mut lca = VecDeque::new();
         lca.push_back(Traverse::traverse(&mut self.root));
         IterMut {
             inner: AbsIter {
@@ -1250,7 +1250,7 @@ impl<K, V> BTreeMap<K, V> {
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn into_iter(self) -> IntoIter<K, V> {
         let len = self.len();
-        let mut lca = RingBuf::new();
+        let mut lca = VecDeque::new();
         lca.push_back(Traverse::traverse(self.root));
         IntoIter {
             inner: AbsIter {
@@ -1342,7 +1342,7 @@ macro_rules! range_impl {
             // A deque that encodes two search paths containing (left-to-right):
             // a series of truncated-from-the-left iterators, the LCA's doubly-truncated iterator,
             // and a series of truncated-from-the-right iterators.
-            let mut traversals = RingBuf::new();
+            let mut traversals = VecDeque::new();
             let (root, min, max) = ($root, $min, $max);
 
             let mut leftmost = None;

src/libcollections/lib.rs

@@ -49,17 +49,33 @@ extern crate alloc;
 #[cfg(test)] #[macro_use] extern crate log;
 
 pub use binary_heap::BinaryHeap;
-pub use bitv::Bitv;
-pub use bitv_set::BitvSet;
+pub use bit_vec::BitVec;
+pub use bit_set::BitSet;
 pub use btree_map::BTreeMap;
 pub use btree_set::BTreeSet;
-pub use dlist::DList;
+pub use linked_list::LinkedList;
 pub use enum_set::EnumSet;
-pub use ring_buf::RingBuf;
+pub use vec_deque::VecDeque;
 pub use string::String;
 pub use vec::Vec;
 pub use vec_map::VecMap;
 
+#[deprecated(since = "1.0.0", reason = "renamed to vec_deque")]
+#[unstable(feature = "collections")]
+pub use vec_deque as ring_buf;
+
+#[deprecated(since = "1.0.0", reason = "renamed to linked_list")]
+#[unstable(feature = "collections")]
+pub use linked_list as dlist;
+
+#[deprecated(since = "1.0.0", reason = "renamed to bit_vec")]
+#[unstable(feature = "collections")]
+pub use bit_vec as bitv;
+
+#[deprecated(since = "1.0.0", reason = "renamed to bit_set")]
+#[unstable(feature = "collections")]
+pub use bit_set as bitv_set;
+
 // Needed for the vec! macro
 pub use alloc::boxed;
 
@@ -71,10 +87,10 @@ mod macros;
 pub mod binary_heap;
 mod bit;
 mod btree;
-pub mod dlist;
+pub mod linked_list;
 pub mod enum_set;
 pub mod fmt;
-pub mod ring_buf;
+pub mod vec_deque;
 pub mod slice;
 pub mod str;
 pub mod string;
@@ -83,15 +99,23 @@ pub mod vec_map;
 
 #[unstable(feature = "collections",
            reason = "RFC 509")]
-pub mod bitv {
-    pub use bit::{Bitv, Iter};
+pub mod bit_vec {
+    pub use bit::{BitVec, Iter};
+
+    #[deprecated(since = "1.0.0", reason = "renamed to BitVec")]
+    #[unstable(feature = "collections")]
+    pub use bit::BitVec as Bitv;
 }
 
 #[unstable(feature = "collections",
            reason = "RFC 509")]
-pub mod bitv_set {
-    pub use bit::{BitvSet, Union, Intersection, Difference, SymmetricDifference};
+pub mod bit_set {
+    pub use bit::{BitSet, Union, Intersection, Difference, SymmetricDifference};
     pub use bit::SetIter as Iter;
+
+    #[deprecated(since = "1.0.0", reason = "renamed to BitSet")]
+    #[unstable(feature = "collections")]
+    pub use bit::BitSet as BitvSet;
 }
 
 #[stable(feature = "rust1", since = "1.0.0")]