Blender Git Loki

New space enum option for the particle instance modifier, to chose which
space the particle data should be interpreted in.

By default the space will now be `Local`, meaning that copies of the
mesh are made with the offset of the respective particle in the particle
object's local space, rather than using the world space offset of the
particle //inside the modified object space//. This behavior is much
more intuitive and consistent with true duplicators, such as face duplis.
Old files will still have `World` setting, so existing blend files are
not changed.