Stabilize a few remaining stragglers

* The `io::Seek` trait, and `SeekFrom` enum.
* The `Iterator::{partition, unsip}` methods.
* The `Vec::into_boxed_slice` method.
* The `LinkedList::append` method.
* The `{or_insert, or_insert_with` methods in the `Entry` APIs.

src/libcollections/btree/map.rs

@@ -1134,8 +1134,7 @@ impl<'a, K: Ord, V> Entry<'a, K, V> {
         }
     }
 
-    #[unstable(feature = "collections",
-               reason = "matches entry v3 specification, waiting for dust to settle")]
+    #[stable(feature = "rust1", since = "1.0.0")]
     /// Ensures a value is in the entry by inserting the default if empty, and returns
     /// a mutable reference to the value in the entry.
     pub fn or_insert(self, default: V) -> &'a mut V {
@@ -1145,8 +1144,7 @@ impl<'a, K: Ord, V> Entry<'a, K, V> {
         }
     }
 
-    #[unstable(feature = "collections",
-               reason = "matches entry v3 specification, waiting for dust to settle")]
+    #[stable(feature = "rust1", since = "1.0.0")]
     /// Ensures a value is in the entry by inserting the result of the default function if empty,
     /// and returns a mutable reference to the value in the entry.
     pub fn or_insert_with<F: FnOnce() -> V>(self, default: F) -> &'a mut V {

src/libcollections/linked_list.rs

@@ -252,6 +252,7 @@ impl<T> LinkedList<T> {
     /// }
     /// println!("{}", b.len()); // prints 0
     /// ```
+    #[stable(feature = "rust1", since = "1.0.0")]
     pub fn append(&mut self, other: &mut LinkedList<T>) {
         match self.list_tail.resolve() {
             None => {

src/libcollections/vec.rs

@@ -389,7 +389,7 @@ impl<T> Vec<T> {
     /// Note that this will drop any excess capacity. Calling this and
     /// converting back to a vector with `into_vec()` is equivalent to calling
     /// `shrink_to_fit()`.
-    #[unstable(feature = "collections")]
+    #[stable(feature = "rust1", since = "1.0.0")]
     pub fn into_boxed_slice(mut self) -> Box<[T]> {
         self.shrink_to_fit();
         unsafe {

src/libcore/iter.rs

@@ -553,8 +553,7 @@ pub trait Iterator {
     /// assert_eq!(even, [2, 4]);
     /// assert_eq!(odd, [1, 3]);
     /// ```
-    #[unstable(feature = "core",
-               reason = "recently added as part of collections reform")]
+    #[stable(feature = "rust1", since = "1.0.0")]
     fn partition<B, F>(self, mut f: F) -> (B, B) where
         Self: Sized,
         B: Default + Extend<Self::Item>,
@@ -930,7 +929,7 @@ pub trait Iterator {
     /// assert_eq!([1, 3], left);
     /// assert_eq!([2, 4], right);
     /// ```
-    #[unstable(feature = "core", reason = "recent addition")]
+    #[stable(feature = "rust1", since = "1.0.0")]
     fn unzip<A, B, FromA, FromB>(self) -> (FromA, FromB) where
         FromA: Default + Extend<A>,
         FromB: Default + Extend<B>,

src/libstd/collections/hash/map.rs

@@ -1482,8 +1482,7 @@ impl<'a, K, V> Entry<'a, K, V> {
         }
     }
 
-    #[unstable(feature = "collections",
-               reason = "matches entry v3 specification, waiting for dust to settle")]
+    #[stable(feature = "rust1", since = "1.0.0")]
     /// Ensures a value is in the entry by inserting the default if empty, and returns
     /// a mutable reference to the value in the entry.
     pub fn or_insert(self, default: V) -> &'a mut V {
@@ -1493,8 +1492,7 @@ impl<'a, K, V> Entry<'a, K, V> {
         }
     }
 
-    #[unstable(feature = "collections",
-               reason = "matches entry v3 specification, waiting for dust to settle")]
+    #[stable(feature = "rust1", since = "1.0.0")]
     /// Ensures a value is in the entry by inserting the result of the default function if empty,
     /// and returns a mutable reference to the value in the entry.
     pub fn or_insert_with<F: FnOnce() -> V>(self, default: F) -> &'a mut V {

src/libstd/io/mod.rs

@@ -441,9 +441,7 @@ pub trait Write {
 ///
 /// The stream typically has a fixed size, allowing seeking relative to either
 /// end or the current offset.
-#[unstable(feature = "io", reason = "the central `seek` method may be split \
-                                     into multiple methods instead of taking \
-                                     an enum as an argument")]
+#[stable(feature = "rust1", since = "1.0.0")]
 pub trait Seek {
     /// Seek to an offset, in bytes, in a stream
     ///
@@ -459,14 +457,16 @@ pub trait Seek {
     /// # Errors
     ///
     /// Seeking to a negative offset is considered an error
+    #[stable(feature = "rust1", since = "1.0.0")]
     fn seek(&mut self, pos: SeekFrom) -> Result<u64>;
 }
 
 /// Enumeration of possible methods to seek within an I/O object.
 #[derive(Copy, PartialEq, Eq, Clone, Debug)]
-#[unstable(feature = "io", reason = "awaiting the stability of Seek")]
+#[stable(feature = "rust1", since = "1.0.0")]
 pub enum SeekFrom {
     /// Set the offset to the provided number of bytes.
+    #[stable(feature = "rust1", since = "1.0.0")]
     Start(u64),
 
     /// Set the offset to the size of this object plus the specified number of
@@ -474,6 +474,7 @@ pub enum SeekFrom {
     ///
     /// It is possible to seek beyond the end of an object, but is an error to
     /// seek before byte 0.
+    #[stable(feature = "rust1", since = "1.0.0")]
     End(i64),
 
     /// Set the offset to the current position plus the specified number of
@@ -481,6 +482,7 @@ pub enum SeekFrom {
     ///
     /// It is possible to seek beyond the end of an object, but is an error to
     /// seek before byte 0.
+    #[stable(feature = "rust1", since = "1.0.0")]
     Current(i64),
 }