Reflecting commit 15021 on version/4.02:
Follow-up to commit 15012: keeping checkbound equations is useless when load equations have been forgotten, as all checkbounds involve a load of a block header.  So, simplify things further by emptying the numbering after calls and allocs.


git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@15022 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02