Clutter and Cogl 1.14

Includes formulae updates for clutter and cogl.
Clutter is version 1.14.4 - only change is the url (from ftp.gnome.org to the download.gnome.org redirector) and shasum.
Cogl is version 1.14.0 - change includes a patch from MacPorts to work around an upstream oversight which requires CLOCK_MONOTONIC (a linux-ism), and url/shasum changes.

Clutter depends on cogl (version 1.14), so they make sense to be bundled together in a PR.

The latest version available is actually 1.16 but I couldn't get it to compile. I don't mind however, as the software I am building only requires 1.14 or higher.