Animated Skincolors don't work properly in OpenGL - 2.2.7[RC2]

Animated skincolors in OpenGl appear to be choppy when compared to how they work in Software Renderer.

It looks to me like that every sprite only gets cached a single time for the skincolour, despite it being animated.
So the first idle sprite from behind gets one part of the animation, and the second idle sprite from behind gets another part of the animation.
(The life icon in the HUD also stays as a single part of the animation.)

The problem is the way opengl handles caching them, not freeing them will end up leaking memory, and freeing them will have unpredictable behavior.

mentioned in merge request !1301 (merged)

mentioned in commit cab089c5

closed via merge request !1301 (merged)