[GTK] Missing a few packages for building on stock Fedora
https://bugs.webkit.org/show_bug.cgi?id=113916

Reviewed by Philippe Normand.

* gtk/install-dependencies: add packages that are missing.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@148449 268f45cc-cd09-0410-ab3c-d52691b4dbfc