Automated fixes to follow Rust development

Applied fixes:
	*extern mod is obsolete
	*attribute fix (cf rust-lang/rust#2569)
	*priv attribute removal (cf rust-lang/rust@f2a5c7a)

Author: Geal

lazy.rs

@@ -20,8 +20,8 @@
 
 /// Lazily generated sequence, only traversable once
 pub struct Lazy<T> {
-    priv head: ~[T],
-    priv thunks: ~[~Eval<Lazy<T>>],
+    head: ~[T],
+    thunks: ~[~Eval<Lazy<T>>],
 }
 
 trait Eval<L> {

lib.rs

@@ -10,7 +10,7 @@ for values of `trait Arbitrary + Shrink`.
 
 Example::
 
-    extern mod qc;
+    extern crate qc;
 
     fn main() {
         qc::quick_check("sort", qc::config.verbose(true).trials(500),
@@ -37,12 +37,12 @@ according to those terms.
 
 */
 
-#[crate_type="lib"];
-#[feature(macro_rules)];
-#[feature(managed_boxes)];
+#![crate_type="lib"]
+#![feature(macro_rules)]
+#![feature(managed_boxes)]
 
 #[cfg(test)]
-extern mod extra;
+extern crate extra;
 
 pub use lazy::Lazy;
 pub use shrink::Shrink;