merge *SliceExt traits, use assoc types in Not, Neg, SliceExt, Raw[Mut]Ptr

Author: Jorge Aparicio

src/libcollections/lib.rs

@@ -25,6 +25,7 @@
 #![feature(macro_rules, default_type_params, phase, globs)]
 #![feature(unsafe_destructor, slicing_syntax)]
 #![feature(unboxed_closures)]
+#![feature(associated_types)]
 #![no_std]
 
 #[phase(plugin, link)] extern crate core;
@@ -119,7 +120,6 @@ mod prelude {
     pub use core::result::Result::{Ok, Err};
 
     // in core and collections (may differ).
-    pub use slice::{PartialEqSliceExt, OrdSliceExt};
     pub use slice::{AsSlice, SliceExt};
     pub use str::{from_str, Str, StrExt};
 
@@ -128,7 +128,7 @@ mod prelude {
     pub use unicode::char::UnicodeChar;
 
     // from collections.
-    pub use slice::{CloneSliceExt, SliceConcatExt};
+    pub use slice::SliceConcatExt;
     pub use str::IntoMaybeOwned;
     pub use string::{String, ToString};
     pub use vec::Vec;