restrict alberto to ocaml<4.02.0 due to warnings-as-errors
update aacplus source build
Merge pull request #3253 from avsm/alberto-ver

restrict alberto to ocaml<4.02.0 due to warnings-as-errors
baardskeerder: restrict to ocaml<4.02.0 due to warnings-as-errors
Merge pull request #3254 from avsm/aacplus-build

update aacplus source build
Merge pull request #3255 from avsm/baards-wae

baardskeerder: restrict to ocaml<4.02.0 due to warnings-as-errors
Merge branch 'master' of git://github.com/ocaml/opam-repository