auto merge of #16575 : pcwalton/rust/import-foo-as-bar, r=aturon

of `use bar as foo`.

Change all uses of `use foo = bar` to `use bar as foo`.

Implements RFC #47.

Closes #16461.

[breaking-change]

r? @aturon

Author: bors

src/doc/rust.md

@@ -1801,7 +1801,7 @@ module through the rules above. It essentially allows public access into the
 re-exported item. For example, this program is valid:
 
 ~~~~
-pub use api = self::implementation;
+pub use self::implementation as api;
 
 mod implementation {
     pub fn f() {}

src/doc/tutorial.md

@@ -3112,7 +3112,7 @@ use farm::*;
 However, that's not all. You can also rename an item while you're bringing it into scope:
 
 ~~~
-use egg_layer = farm::chicken;
+use farm::chicken as egg_layer;
 # mod farm { pub fn chicken() { println!("Laying eggs is fun!")  } }
 // ...
 
@@ -3335,7 +3335,7 @@ you just have to import it with an `use` statement.
 For example, it re-exports `range` which is defined in `std::iter::range`:
 
 ~~~
-use iter_range = std::iter::range;
+use std::iter::range as iter_range;
 
 fn main() {
     // `range` is imported by default

src/liballoc/lib.rs

@@ -86,7 +86,7 @@ extern crate libc;
 
 #[deprecated = "use boxed instead"]
 #[cfg(not(test))]
-pub use owned = boxed;
+pub use boxed as owned;
 
 // Heaps provided for low-level allocation strategies
 

src/libcollections/hash/mod.rs

@@ -73,7 +73,7 @@ use core::mem;
 use vec::Vec;
 
 /// Reexport the `sip::hash` function as our default hasher.
-pub use hash = self::sip::hash;
+pub use self::sip::hash as hash;
 
 pub mod sip;
 

src/libcollections/string.rs

@@ -19,13 +19,13 @@ use core::fmt;
 use core::mem;
 use core::ptr;
 // FIXME: ICE's abound if you import the `Slice` type while importing `Slice` trait
-use RawSlice = core::raw::Slice;
+use core::raw::Slice as RawSlice;
 
 use {Mutable, MutableSeq};
 use hash;
 use str;
 use str::{CharRange, StrAllocating, MaybeOwned, Owned};
-use MaybeOwnedSlice = str::Slice; // So many `Slice`s...
+use str::Slice as MaybeOwnedSlice; // So many `Slice`s...
 use vec::Vec;
 
 /// A growable string stored as a UTF-8 encoded buffer.

src/libcollections/vec.rs

@@ -13,13 +13,13 @@
 use core::prelude::*;
 
 use alloc::heap::{allocate, reallocate, deallocate};
-use RawSlice = core::raw::Slice;
 use core::cmp::max;
 use core::default::Default;
 use core::fmt;
 use core::mem;
 use core::num;
 use core::ptr;
+use core::raw::Slice as RawSlice;
 use core::uint;
 
 use {Mutable, MutableSeq};

src/libcore/kinds.rs

@@ -21,7 +21,7 @@ by the compiler automatically for the types to which they apply.
 */
 
 #[deprecated = "This has been renamed to Sync"]
-pub use Share = self::Sync;
+pub use self::Sync as Share;
 
 /// Types able to be transferred across task boundaries.
 #[lang="send"]

src/libcore/lib.rs

@@ -107,7 +107,7 @@ pub mod collections;
 /// Deprecated module in favor of `std::cell`
 pub mod ty {
     #[deprecated = "this type has been renamed to `UnsafeCell`"]
-    pub use Unsafe = cell::UnsafeCell;
+    pub use cell::UnsafeCell as Unsafe;
 }
 
 /* Core types and methods on primitives */

src/libcore/slice.rs

@@ -50,7 +50,7 @@ use mem::size_of;
 use kinds::marker;
 use raw::Repr;
 // Avoid conflicts with *both* the Slice trait (buggy) and the `slice::raw` module.
-use RawSlice = raw::Slice;
+use raw::Slice as RawSlice;
 
 
 //

src/libgraphviz/lib.rs

@@ -47,7 +47,7 @@ forming a diamond-shaped acyclic graph and then pointing to the fifth
 which is cyclic.
 
 ```rust
-use dot = graphviz;
+use graphviz as dot;
 use graphviz::maybe_owned_vec::IntoMaybeOwnedVector;
 
 type Nd = int;
@@ -147,7 +147,7 @@ labelled with the ⊆ character (specified using the HTML character
 entity `&sube`).
 
 ```rust
-use dot = graphviz;
+use graphviz as dot;
 use std::str;
 
 type Nd = uint;
@@ -203,7 +203,7 @@ The output from this example is the same as the second example: the
 Hasse-diagram for the subsets of the set `{x, y}`.
 
 ```rust
-use dot = graphviz;
+use graphviz as dot;
 use std::str;
 
 type Nd<'a> = (uint, &'a str);