Blender Git Loki

Fix for second bug reported in #32846: Particle emitters are still shown for secondary instances with "show emitter" disabled. This requires checking the duplicator visibility on dupli objects themselves after generating the dupli-list.

The emitter visibility option is messy design, it makes such checks unnecessarily complicated. A better approach would be to allow non-mesh objects to carry particle data, these objects would just be invisible anyway without having to care about extra settings. However, this conflicts with the simplistic particle design of "owner is the emitter" ...