Add hack to keep actix-web and actori-web compiling

This extends the existing `ident_name_compatibility_hack` to handle the
`tuple_from_req` macro defined in `actix-web` (and its fork
`actori-web`).

compiler/rustc_span/src/symbol.rs

@@ -1114,6 +1114,7 @@ symbols! {
         try_trait,
         tt,
         tuple,
+        tuple_from_req,
         tuple_indexing,
         two_phase,
         ty,