flambda-backend: Restore missing .h files to caml directory of runtime 5's installed compiler (#2695)

* Add `opnames.h` to caml directory of installed compiler

* Add  to caml directory, and put  in the proper caml directory instead of top-level

Author: ncik-roberts

otherlibs/runtime_events/dune

@@ -44,7 +44,7 @@
     (.runtime_events.objs/byte/runtime_events.cmi as runtime_events/runtime_events.cmi)
     (.runtime_events.objs/byte/runtime_events.cmt as runtime_events/runtime_events.cmt)
     (.runtime_events.objs/byte/runtime_events.cmti as runtime_events/runtime_events.cmti)
-    (runtime_events_consumer.h as runtime_events_consumer.h)
+    (runtime_events_consumer.h as caml/runtime_events_consumer.h)
     (META as runtime_events/META)
   )
   (section lib)

runtime/caml/dune

@@ -21,6 +21,16 @@
      (bash "cat %{h} | tr -d '\\r' | \
             sed -n -e '/^  /s/ \\([A-Z]\\)/ \\&\\&lbl_\\1/gp' -e '/^}/q'"))))
 
+(rule
+  (targets opnames.h)
+  (deps instruct.h ../../Makefile
+   ../../Makefile.common
+   ../../Makefile.config
+   ../../Makefile.build_config
+   ../../Makefile.config_if_required
+  )
+  (action (run make -s -C ../.. COMPUTE_DEPS=false runtime/caml/opnames.h)))
+
 (rule
  (targets version.h)
  (mode    fallback)
@@ -66,6 +76,7 @@
     (intext.h as caml/intext.h)
     (io.h as caml/io.h)
     (lf_skiplist.h as caml/lf_skiplist.h)
+    (jumptbl.h as caml/jumptbl.h)
     (m.h as caml/m.h)
     (major_gc.h as caml/major_gc.h)
     (md5.h as caml/md5.h)
@@ -74,6 +85,7 @@
     (minor_gc.h as caml/minor_gc.h)
     (misc.h as caml/misc.h)
     (mlvalues.h as caml/mlvalues.h)
+    (opnames.h as caml/opnames.h)
     (osdeps.h as caml/osdeps.h)
     (platform.h as caml/platform.h)
     (prims.h as caml/prims.h)