OCamlPro/opam-repository — pull request #556 by pveber (2013-03-23 12:03:43+00:00)
Title: cairo: make lablgtk an optional dep

Lablgtk is an optional dep for cairo:
```
[cochinois:~/tmp/cairo-0.4.2 12:44]$ocaml setup.ml -configure -help
configure options:
--override var+val Override any configuration variable.
--enable-lablgtk2 Whether to connect Cairo and lablgtk2. [default: disabled]
--disable-lablgtk2 Whether to connect Cairo and lablgtk2. [default: disabled]
...
```