Blender Git Loki

Clenup: UI names.

Import: change default axis values.

Fix crashes and lookup errors due to a weak (and not so thread safe)
string tokenizer algorithm.

Fix a couple of issues with NURBS.

NURBS are still not read (and/or written) properly though.

Add some shell code to support more object types.

Add support to read in subd meshes.

Only vertices and faces are read at the moment. Support for more
properties, such as creases, will come later.

Split mesh read function into smaller ones.

Reading material groups now works again.

It does not read material data as those aren't typically written in .abc
archives, so the materials added only have default values.

Perform the import and export inside of dedicated jobs (for a bonus
progress bar).

Cleanup: reduce number of parareters to some AbcExporter methods, style.

Fix typo in previous commit.

Remove usage of boost::progress.

Progress report will eventually be done through the job system.

Rename AbcExportOptions -> ExportSettings.

Move import settings to a separate struct.

WIP work on setting up object transformations.

Still a few issues, might need to setup transform depending on the
object's type.

Fix some compiler errors when building without alembic.

Slightly optimize object hierarchy creation.

Add an empty (Maya locator) object reader.

Add a default mesh cache modifier to the imported mesh objects.

Merge branch 'master' into alembic_basic_io