Merge pull request #1146 from mirage/master

travis: test full matrix of opam/ocaml versions
Merge pull request #1147 from mirage/master

xenctrl depends on ocaml4 only feature (List.iteri)
merlin: remove outdated (broken) packages
merlin: minor release
Merge pull request #1143 from trefis/master

merlin: minor release + cleanup
Merge pull request #1148 from mirage/master

+tuntap.0.7.0
added new version of otags
+ OUnit 2.0.0
sqlgg: version constraint on oUnit
added latest version package
Merge pull request #1150 from camlunity/master

+ OUnit 2.0.0
rm because package names don't have a - usually
fixed OCaml version
Merge pull request #1149 from UnixJunkie/newer_otags

added new version of otags