biocaml: add required version constraints
Added version 1.8.2 of OCaml EFL.
Add udunits 0.2.0
Summary:
New version of the parsing libraries (needed by facebook software
soon to be released as open source). This version also works
with ocaml 3.12.1

Test plan:
put this package in my ~/testing repo
opam update testing
opam install pfff
=> it works, it installs pfff-xxx libraries
opam remove pfff
=> it works, it uninstalls pfff-xxx libraries
remove .cmt from install-findlib
Updated patches to match dose patches in opam's src_ext
Now handle all constraints in an upgrade request for the internal solver.
Aligned patch number with opam source, include new patches in opam file.
Reorder patches
Reorder patches
Merge pull request #1783 from rdicosmo/update-dose-patches

Update dose patches, and move them to a separate directory
Merge pull request #1784 from fpottier/master

Release 20140313 of PPrint.
Merge pull request #1779 from hcarty/master

Add udunits 0.2.0
Merge branch 'master' of git://github.com/axiles/opam-repository into axiles-master
Travis: follow HTTP redirects when downloading source patches
Merge pull request #1785 from mirage/axiles-master

version 1.8.2 of OCaml EFL with Travis fixes
be more bsd friendly
Merge pull request #1781 from aryx/master

pfff 0.27.1
dose: backport opam patches, remove camlp4 dep
Merge pull request #1788 from AltGr/dose-no-camlp4

Backport opam dose patches