deriving: constrain optcomp dep
update IOCaml to latest ctypes
whoops; missed the *entire point* of the upgrade.

ctypes >= 0.3
missed lwt dependancy on iocaml-kernel
see if we can get the osx build to pass
Add package for PG'OCaml 2.0
Add gdal 0.5.0
Fix opam
Add ocaml-version constraint
Merge pull request #2174 from dominicjprice/master

Added oauth-client version 0.2.0
Merge pull request #2172 from hcarty/gdal-0.5.0

Add gdal 0.5.0
Merge pull request #2169 from camlunity/master

deriving: constrain optcomp dep
Merge pull request #2170 from andrewray/iocaml.0.4.4

update IOCaml to latest ctypes
Merge pull request #2175 from darioteixeira/master

Add package for PG'OCaml 2.0 (bis)
macaque: Require pgocaml < 2.0
Add dht 0.1.2
Cleanup and normalise some packages
Fix copy+paste error
Merge pull request #2176 from jpdeplaix/master

macaque: Require pgocaml < 2.0
Merge pull request #2177 from nojb/master

Add dht 0.1.2