Blender Git Loki

Partial instancing feature for the ParticleInstance modifier.

This allows using the same particle system for multiple objects without
creating too much repetitiveness. Each instance object can select a
range of the particles to actually use for instancing (default 1.0 means
all particles are used). To further avoid overlap with multiple
instancing objects, the offset value can be used to make each system
use a specific range of particles.