Add additional migrations to handle auto-traits and clone traits

Combine all 2229 migrations under one flag name

compiler/rustc_span/src/symbol.rs

@@ -933,6 +933,7 @@ symbols! {
         receiver,
         recursion_limit,
         reexport_test_harness_main,
+        ref_unwind_safe,
         reference,
         reflect,
         reg,
@@ -1054,6 +1055,7 @@ symbols! {
         self_in_typedefs,
         self_struct_ctor,
         semitransparent,
+        send,
         send_trait,
         shl,
         shl_assign,
@@ -1275,6 +1277,7 @@ symbols! {
         unused_qualifications,
         unwind,
         unwind_attributes,
+        unwind_safe,
         unwrap,
         unwrap_or,
         use_extern_macros,