flambda-backend: Bump magic numbers (oxcaml#1077)

Author: mshinwell

boot/ocamlc

@@ -60,7 +60,7 @@ struct exec_trailer {
 
 /* Magic number for this release */
 
-#define EXEC_MAGIC "Caml1999X031"
+#define EXEC_MAGIC "Caml1999X500"
 
 #endif /* CAML_INTERNALS */
 

boot/ocamllex

@@ -97,29 +97,29 @@ let stack_allocation = %%STACK_ALLOCATION%%
 let poll_insertion = %%POLL_INSERTION%%
 
 (* When artifacts are incompatible with upstream OCaml, ocaml-jst uses
-   magic numbers ending in 5xx. (The AST and bytecode executables remain
+   magic numbers ending in 5xx. (The AST remains
    compatible, so use upstream numbers) *)
-let exec_magic_number = "Caml1999X031"
+let exec_magic_number = "Caml1999X500"
     (* exec_magic_number is duplicated in runtime/caml/exec.h *)
-and cmi_magic_number = "Caml1999I500"
-and cmo_magic_number = "Caml1999O500"
-and cma_magic_number = "Caml1999A500"
+and cmi_magic_number = "Caml1999I501"
+and cmo_magic_number = "Caml1999O501"
+and cma_magic_number = "Caml1999A501"
 and cmx_magic_number =
   if flambda || flambda2 then
-    "Caml2021y502"
+    "Caml2021y503"
   else
-    "Caml2021Y502"
+    "Caml2021Y503"
 and cmxa_magic_number =
   if flambda || flambda2 then
-    "Caml2021z502"
+    "Caml2021z503"
   else
-    "Caml2021Z502"
+    "Caml2021Z503"
 and ast_impl_magic_number = "Caml1999M031"
 and ast_intf_magic_number = "Caml1999N031"
-and cmxs_magic_number = "Caml1999D501"
-and cmt_magic_number = "Caml1999T500"
-and linear_magic_number = "Caml1999L500"
-and cfg_magic_number = "Caml2021G500"
+and cmxs_magic_number = "Caml1999D502"
+and cmt_magic_number = "Caml1999T501"
+and linear_magic_number = "Caml1999L501"
+and cfg_magic_number = "Caml2021G501"
 
 let interface_suffix = ref ".mli"