[OE-core] updates for cogl, clutter and mx v3

[Tomas Frydrych]

Fixes per Ross' comments:

 * Removed unused/unnecessary configure options
 * Reworked PACKAGECONFIG for cogl and clutter
 * Removed unnecessary configure framment's from cogl/clutter/clutter-gst

[PATCH v3 1/8] clutter.bbclass: helper class for clutter and friends
[PATCH v3 2/8] New cogl recipe (1.14.0)
[PATCH v3 3/8] New clutter recipe (1.14.4)
[PATCH v3 4/8] fix clutter
[PATCH v3 5/8] New clutter-gst recipe (1.6.0)
[PATCH v3 6/8] New clutter-gtk recipe (1.4.2)
[PATCH v3 7/8] New mx recipe (1.4.7)
[PATCH v3 8/8] packagegroup-core-clutter: use clutter-1.0 packages