Update webkit2-gtk3 to 2.6.6.
- Update PORTSCOUT to try to look for new versions in the current series. New major versions will be imported with GNOME updates.
- This version builds with cmake 3.2
- Changelog: http://webkitgtk.org/2015/04/07/webkitgtk2.6.6-released.html
- Update pkg-descr and WWW [1]
Noticed by: swills@ [1]