Blender Git Loki

Fixed read/write code for particle display dupli lists and added a
modifier object walk callback (also used in readfile for generic
modifier lib_link).

Free dupli object lists correctly when freeing display structs.

Boilerplate RNA for the particle display settings.

Add a dupli display method by default.

Single display 'add' function, is easier to provide as API method.

Automatically set the object transflag for nparticle duplis, like
current particles (but actual code is in nparticle to stay out of object
code as much as possible).

Moved the particle display list from the modifier into the psys itself.
This makes the modifier more easily replaceable later on and allows
more detailed management of the particle object settings (in particular
dupli flags).

Particle display type for duplis.

Removed old unused nparticle modifier code.

Only call the 'validate' function for particles once, to prevent them
from being removed and added back to the world continuously, which
resets the motion state each time. Also set the USED flag outside of
validate since this is not executed every step and would otherwise
delete all existing particles.

Added new bparticles function for copying the current particle state
instead of just creating a new empty state. Also clear the py_handle
when copying the state, otherwise the PyObject is invalid.

Set some usable default values for a number of particle rigid body
settings.

Some missing stddef.h includes for NULL.

Very basic sync method for particles, which copies the state and
updates the particle positions from rigid bodies.

Fix for rigid body removal methods: Flag new rigid bodies for particles
as used to prevent freeing. Also remove bodies if they already exist,
to prevent double adding and subsequent assert failure.

Conflicts:
source/blender/blenkernel/intern/rigidbody.c

Fix for RigidBodyWorld reading: initialize empty body mempool when
reading blend files, this is not actually stored.

Removed rigidbody build/apply functions from NParticle API. It's better
to keep this functionality inside RigidBody blenkernel for now.

Cleanup: Separate function for details of the object 'apply' method.

Added inline comment about possible memory management optimization.

Cleanup: Separated object and constraint build loops into own functions.
Renamed some more API methods to follow the new naming scheme.

Conflicts:
source/blender/blenkernel/intern/rigidbody.c