ox: lower openflow version requirement for ox.1.0.1

ox.1.0.1 will not build with openflow.0.2.0 because of some API changes
in the lwt subpackage. This subackage is deprecated and in fact has
been removed from openflow.0.3.0.
ox: add v1.1.0
openflow: add async version constraint for openflow.0.3.0
ox: constrain version of  async_extra rather than async

That is the package that contains the API incompatibility.
openflow: update async_extra constraint

Maybe the trailing 0 is necessary.
Cleanup and normalise some packages
Fix copy+paste error
Revert to using 'ocamlfind remove ...' instead of 'make uninstall'
Merge pull request #2178 from darioteixeira/master

Cleanup and normalise some packages
+mirage-net-unix-1.1.1
Add ojquery and ojwidgets
Merge pull request #2179 from avsm/master

+mirage-net-unix-1.1.1
openflow: change depots constraint to a conflicts constraint
Merge pull request #2180 from Drup/master

Add ojquery and ojwidgets
Add ocaml-git 1.1.0
Fix ocaml-git dependencies
new release of ACPC
Fix ocaml-git 1.1.0 checksum
Fix ocaml-git 1.1.0 deps
Merge pull request #2181 from samoht/master

Add ocaml-git 1.1.0