std: Drop Total from Total{Eq,Ord}

This completes the last stage of the renaming of the comparison hierarchy of
traits. This change renames TotalEq to Eq and TotalOrd to Ord.

In the future the new Eq/Ord will be filled out with their appropriate methods,
but for now this change is purely a renaming change.

[breaking-change]

src/libstd/string.rs

@@ -30,7 +30,7 @@ use str;
 use vec::Vec;
 
 /// A growable string stored as a UTF-8 encoded buffer.
-#[deriving(Clone, PartialEq, PartialOrd, TotalEq, TotalOrd)]
+#[deriving(Clone, PartialEq, PartialOrd, Eq, Ord)]
 pub struct String {
     vec: Vec<u8>,
 }