Restore lost multiarch for graphics/cairo.
Convert multimedia/gst-plugins1 to multiarch.
(Re?)convert x11/gtk3 to multiarch.
Convert graphics/opencv to multiarch.
Attempted libumem workarounds.
Merge branch 'joyent/feature/multiarch/2013Q4' into joyent/release/2013Q4
Merge branch 'joyent/feature/miscfix/2013Q4' into joyent/release/2013Q4