add: lints.rs

add: `lints.rs`
refactor: move `InvalidAtomicOrderingDiag` to `lints.rs`

compiler/rustc_lint/src/lib.rs

@@ -38,6 +38,8 @@
 #![feature(never_type)]
 #![feature(rustc_attrs)]
 #![recursion_limit = "256"]
+// #![deny(rustc::untranslatable_diagnostic)]
+// #![deny(rustc::diagnostic_outside_of_impl)]
 
 #[macro_use]
 extern crate rustc_middle;
@@ -60,6 +62,7 @@ mod internal;
 mod late;
 mod let_underscore;
 mod levels;
+mod lints;
 mod methods;
 mod non_ascii_idents;
 mod non_fmt_panic;