Blender Git Loki

Added optional motion state data to Strands.

This implements the distinction between the strand goal position
(grooming data, shape keys) and the result of dynamics simulation.

Baking API for cache modifiers.

Cache baking means the cache modifier should read input caches over the
given frame range and produce the correct output for writing into the
output cache file.

Cache modifiers can optionally implement a 'bake' function. This is used
through a bake operator from the cache modifier panel. Baking is
executed in a job, which will help with cancelling bakes and displaying
status info.

Merge branch 'alembic' into gooseberry

Avoid clearing the record of cached frames when doing particle trails.

This is implemented badly: when using disk caches i reads the *entire*
cache from the disk to create the trail. In the process it also clears
the cached_frames array, which makes it look like the cache was deleted.

Merge branch 'master' into gooseberry

New modifier system for cache libraries.

This system imitates the modifier stack for mesh objects. It will be
used to handle simulations and similar processing of cached data.

Use the last valid cache modifier output file for reading into the
dupli cache.

This makes the cache modifier stack work more like actual modifiers:
Each will take the previous result and write it into its own output
file. The last output is the final result used for viewport display.

Smoke sim option for emitting color based on particle textures.

When using a particle inflow object, there is now an option "Set Color"
which uses particle texture color to override the uniform smoke emission
color.

Particles must have one or more textures with the "Color" influence
enabled (the resulting color can be visualized in the viewport using the
"Texture" display option). The color will then replace the default smoke
flow setting and allows variable color per particle.

Combined with "Strand/Particle" texture mapping this can also be used
to change the particle emission color over the lifetime of particles or
make variable colors for each particle in the system.

Note that this currently does not work with child particles.

Particle color influence option for particle textures.

This color is currently only displayed in the viewport (when enabling
"Texture" color mode in the Display settings). It will be used for
controlling the smoke color when using particles for smoke emission.

quiet warnings (increase int size for bitshift)

Merge branch 'master' into gooseberry

Cleanup: style

Merge branch 'master' into alembic

Merge branch 'alembic' into gooseberry

Merge branch 'master' into gooseberry

Minor naming conflict fix.

Alembic: correct last commit

Alembic: cleanup warnings

Basic drawing code for strands loaded from caches.

This is entirely separate from particle systems and their insane
drawing function.

Fix for crash when deleting an object that was used in a dupli cache.

Object-unlink was clearing the linked object's dupli cache instead of
the duplicator.