Blender Git Loki

Define a collection of "object_caches" in the CacheLibrary RNA for
iterating over all objects eligible for caching in the group.

This allows for nested dupligroup instances as well. All objects that
are instantiated at least once by any group can be included in the
respective cache, but get represented only once because the cached data
is the same anyway.

`New` operator for adding cache libraries.

Conflicts:
release/scripts/startup/bl_ui/properties_physics_common.py
source/blender/blenkernel/BKE_pointcache.h
source/blender/blenkernel/intern/pointcache.c
source/blender/editors/physics/physics_ops.c
source/blender/editors/physics/physics_pointcache.c

Draw some UI buttons for all the current cache item types.

Group pointer property for cache libraries to associate them with an
object group.

This is somewhat experimental, eventually we may want to link to Objects
instead, or allow multiple cache targets for the same cache, etc.

Fix for remaining PointCache references in the alembic code.

Now, for the time being, uses a simple relative "//blendcache/" folder
path again. This will be adressed later.

PointCache modifier to act as a terminator in modifier stacks.

When writing DerivedMesh data, the modifier result at the point of the
modifier will be used for writing to the cache. If this modifier is not
used the derivedFinal mesh is used instead.

Cache API for export/import of Blender data to/from Alembic files.

The pointcache API is designed to keep the general concept of caching
separate from the concrete Alembic implementation. Other types of file
export/import would be possible, e.g. for OpenVDB data.

Initial Alembic library integration for Blender.

Adds Alembic as a dependency and build support in cmake and scons.

Also extends the install_deps.sh script with a temporary installation
procedure for the Alembic libraries. This is still very hackish and
needs to be improved.

Merge branch 'master' into gooseberry

Revert "Better fix for animation returning negative values when AVsynch is on,"

This reverts commit 459b1a907ce542ec3f10a533d27832ac9dfbc92d.

Alembic: correct last commit

Alembic: cleanup warnings

Alembic: expose CMake var ALEMBIC_INCLUDE_DIR

The include path could be cached to a stale value, with no obvious way to reset.

Merge branch 'master' into gooseberry

Conflicts:
source/blender/editors/render/render_opengl.c

Customdata caching for CD_ORIGSPACE_MLOOP.

Customdata caching for CD_ORCO.

Basic drawing code for strands loaded from caches.

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

Smoke cache offset (start frame) feature.

This lets users set a start frame at which a cached smoke simulation
starts. This offset is simply subtracted from the current scene frame
for evaluating the cache.

Simplified data structure and reading code for strands in Alembic
caches.

Revert "Disable cuda binaries on the buildbot for the gooseberry branch."

This reverts commit 83da7b1edba27aaeef0a6d4e3114390305f7dc02.