restrict cache to ocaml <4.02.0 due to warnings-as-errors
cduce doesnt build on ocaml 4.02.0 (runtime assertion failure)
Merge branch 'master' of git://github.com/ocaml/opam-repository
Merge pull request #3256 from avsm/cache-wae

restrict cache to ocaml <4.02.0 due to warnings-as-errors
add upper constraint on xe and cohttp

see also djs55/xapi-xe#10 for the cohttp fixes
restrict ocapic to ocaml <4.02.0 due to warnings-as-errors
Merge pull request #3257 from avsm/xe-cohttp

Xe cohttp
Sync latest compiler pull requests
Merge pull request #3259 from bactrian/sync-prs-1419206401

Sync OCaml compiler PRs
ppx_deriving.1.1 - via opam-publish
ppx_deriving_yojson.2.1 - via opam-publish
tls 0.3.0 and friends
Merge pull request #3258 from avsm/ocapic-wae

restrict ocapic to ocaml <4.02.0 due to warnings-as-errors
Merge pull request #3263 from whitequark/opam-publish/ppx_deriving.1.1

ppx_deriving.1.1 - via opam-publish
Merge pull request #3264 from whitequark/opam-publish/ppx_deriving_yojson.2.1

ppx_deriving_yojson.2.1 - via opam-publish
+lbfgs 0.8.6
Merge pull request #3266 from Chris00/master

+lbfgs 0.8.6
fix opam version
Merge pull request #3265 from pqwy/tls-0.3.0-etc

tls 0.3.0 and friends
add type_conv as dependency, and tls-0.2.0 requires nocrypto<0.3.0