Blender Git Loki

Alembic Procedural: basic cache control settings

This adds a setting to enable data caching, and another one to set the
maximum cache size in megabytes.

When caching is enabled we load the data for the entire animation in
memory, as we already do, however, if the data exceeds the memory limit,
render is aborted.

When caching is disabled, we simply load the data for the current frame
in memory.

Ref D10197

Reviewed By: brecht

Differential Revision: https://developer.blender.org/D11163