rollup merge of #18398 : aturon/lint-conventions-2

Conflicts:
	src/libcollections/slice.rs
	src/libcore/failure.rs
	src/libsyntax/parse/token.rs
	src/test/debuginfo/basic-types-mut-globals.rs
	src/test/debuginfo/simple-struct.rs
	src/test/debuginfo/trait-pointers.rs

src/libstd/dynamic_lib.rs

@@ -17,7 +17,7 @@ A simple wrapper over the platform's dynamic library facilities
 */
 
 #![experimental]
-#![allow(missing_doc)]
+#![allow(missing_docs)]
 
 use clone::Clone;
 use collections::MutableSeq;