color: Add named, global colors

Since EGA colors are apparently all the rage in other toolkits, Clutter
should not be left out. On top of the usual CGA/EGA palette the static
colors also include the Tango Icon palette, which at least is more
pleasant to the eye.

Static colors are accessed through an enumeration by using
clutter_color_get_static(), or using the short-hand pre-processor
macros.

http://bugzilla.clutter-project.org/show_bug.cgi?id=2066

clutter/clutter.h

@@ -57,6 +57,7 @@
 #include "clutter-click-action.h"
 #include "clutter-clone.h"
 #include "clutter-color.h"
+#include "clutter-color-static.h"
 #include "clutter-colorize-effect.h"
 #include "clutter-constraint.h"
 #include "clutter-container.h"