[Bug 599018] caca: Cleanups and fixes

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=599018
  GStreamer | gst-plugins-good | git

--- Comment #13 from Guillaume Desmottes <gdesmott at gnome.org> 2014-06-18 12:55:44 UTC ---
I rebased the patch on top of 1.2 and tried fixing the review comments.

Still not sure if we want an enum or string property though.

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