- updated to 4.02.1 (ocaml 3.x left on ocaml-3 branch)
- updated CFLAGS,as_needed patches
- removed outdated db3,gas,tcl86 patches
- DBM module, labltk and camlp4 removed upstream; now they can be found in
  ocaml-dbm, ocaml-labltk, ocaml-camlp4 specs respectively