Automated fixes to follow Rust development

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

src/lib.rs

@@ -1,6 +1,6 @@
-#[crate_id="boehm#0.1"];
-#[crate_type="rlib"];
-#[feature(globs, macro_rules)];
+#![crate_id="boehm#0.1"]
+#![crate_type="rlib"]
+#![feature(globs, macro_rules)]
 
 use std::{libc, mem};
 use std::kinds::marker;
@@ -41,8 +41,8 @@ pub fn debug_dump() {
 /// A garbage collected pointer.
 #[deriving(Clone)]
 pub struct Gc<T> {
-    priv ptr: *mut T,
-    priv mark: marker::NoSend
+    ptr: *mut T,
+    mark: marker::NoSend
 }
 
 impl<T: 'static> Gc<T> {

src/tracing/boehm_traced_impls.rs

@@ -1,4 +1,4 @@
-#[doc(hidden)];
+#![doc(hidden)]
 use std::{mem, cell};
 use tracing::{BoehmTraced, GcTracing, GC_WORDSZ};
 

src/tracing/mod.rs

@@ -1,4 +1,4 @@
-#[allow(dead_code)];
+#![allow(dead_code)]
 
 //! Precise GC on the heap.
 //!
@@ -59,9 +59,9 @@ pub fn make_descriptor(bitmap: &[bool]) -> ffi::GC_descr {
 /// That is, run Boehm in precise-on-the-heap mode.
 #[deriving(Clone)]
 pub struct GcTracing<T> {
-    priv ptr: *mut T,
-    priv mark: marker::NoSend
-    //priv force_managed: Option<@()>
+    ptr: *mut T,
+    mark: marker::NoSend
+    //force_managed: Option<@()>
 }
 
 impl<T: BoehmTraced> GcTracing<T> {