Blender Git Loki

Fix #35372: sculpting/painting long brush strokes with small brush size would
take up a lot of memory.

The operator was recording an array with all stroke points. However this was not
particularly useful, only sculpt mode had exec() implemented to redo the stroke,
but it was not registering the operator anyway so there was no way to access the
data after the operator was done. So no one was using this anyway.

I did now implement exec for the paint modes so you can call the operator with
stroke points from a script.