Added package for maildir library from Nicolas Ojeda Bar
Added oasis to maildir dependencies
Merge branch 'master' of github.com:ocaml/opam-repository
maildir url set to a stable git tag
Added facebook-sdk version 0.3.5
Added checksum to facebook-sdk.0.3.5
Merge pull request #2068 from dominicjprice/master

Added package for maildir library from Nicolas Ojeda Bar