temporary bootstrap (%_[nNlL] not yet handled by the typer)

Bootstrap steps:

  disable "-warn-error A" in Makefile

  make library -j3 \
  && cp stdlib/stdlib.cma stdlib/std_exit.cmo stdlib/*.cmi boot/ \
  && make partialclean \
  && make ocamlc ocaml -j5

  enable -warn-error A again

cp ocamlc boot/

git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@14821 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02