[EFL] Make it possible to use ninja for EFL build too
https://bugs.webkit.org/show_bug.cgi?id=137605

Reviewed by Csaba Osztrogonác.

* Scripts/webkitdirs.pm:
(generateBuildSystemFromCMakeProject):
* efl/install-dependencies:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@174681 268f45cc-cd09-0410-ab3c-d52691b4dbfc