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

[Tomas Frydrych]

The following set of patches updates clutter and friends; the recipes were
completely reworked and use PACKAGECONFIG to facilitate easy reconfiguration 
to match distro / machine needs. 

Clutter and Cogl packages are renamed to use a '-1.0' suffix instead of the 
'-vmajor.vminor' suffix of the old recipes, in keeping up with the upstream 
versioning policy, and to simplify dependency maintenance (note that dev files
for the 1.x series are not parallel installable anyway); the '-1.0' suffix is 
with a view toward the '2.0' series which are on the horizon.

The Cogl recipe is moved into a subdirectory of its own, this seemed 
appropriate as Cogl is now a seprate project in its own right.

The new versions are: cogl 1.4.0, clutter 1.14.4, clutter-gst 1.6.0, 
clutter-gtk 1.4.2. The mx recipe is fixed up to build against the updated cogl
and clutter.

[PATCH 1/7] Remove old clutter recipes
[PATCH 2/7] clutter.bbclass: helper class for clutter and friends
[PATCH 3/7] New cogl recipe (1.14.0)
[PATCH 4/7] New clutter recipe (1.14.4)
[PATCH 5/7] New clutter gst recipe (1.6.0)
[PATCH 6/7] New clutter-gtk recipe (1.4.2)
[PATCH 7/7] Update mx recipe to build with clutter 1.14.4