* Fix FTBFS on bytecode architectures. - Add patch 0002-Set-OCAMLBEST-to-native-when-ocamlopt-is-present.patch to be able to override OCAMLBEST from d/rules. - Set OCAMLBEST from /u/s/o/ocamlvars.mk in d/rules so that mips*, ppc64el and s390x are not considered as native architectures.