Added version 1.9.0 of ocaml-efl.

EFL/Elementary 1.9 is not yet in a ppa.
Therefore, the depexts script do the following:
-install dependencies via apt-get
-install EFL/Elementary from source
I don't have ubuntu, hence I can only test this script with Travis via a pull request.
At first, Travis build might fail. Please, ignore this pull request until Travis build test is OK.