Change workflow of caml_gc_dispatch to make sure the major GC does not stall when no minor allocations take place.
Change workflow of caml_gc_dispatch to make sure the major GC does not
stall when no minor allocations take place.

gerdstolpmann/ocaml,gerdstolpmann/ocaml,gerdstolpmann/ocaml,gerdstolpmann/ocaml,gerdstolpmann/ocaml