Fix deprecated stuff so it builds again

Author: Manishearth

macros/src/atom/mod.rs

@@ -107,7 +107,7 @@ pub fn expand_ns(cx: &mut ExtCtxt, sp: Span, tt: &[TokenTree]) -> Box<MacResult+
     ];
 
     fn usage() -> String {
-        let ns_names: Vec<&'static str> = ALL_NS.slice_from(1).iter()
+        let ns_names: Vec<&'static str> = ALL_NS[1..].iter()
             .map(|&(x, _)| x).collect();
         format!("Usage: ns!(HTML), case-insensitive. \
             Known namespaces: {}",

shared/repr.rs

@@ -124,7 +124,7 @@ pub unsafe fn inline_orig_bytes<'a>(data: &'a u64) -> &'a [u8] {
     match UnpackedAtom::from_packed(*data) {
         Inline(len, _) => {
             let src: &[u8] = mem::transmute(inline_atom_slice(data));
-            src.slice_to(len as usize)
+            &src[..(len as usize)]
         }
         _ => intrinsics::unreachable(),
     }

src/atom/mod.rs

@@ -257,7 +257,7 @@ impl Drop for Atom {
     }
 }
 
-impl fmt::Show for Atom {
+impl fmt::Debug for Atom {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         let ty_str = unsafe {
             match self.unpack() {