Blender Git Loki

Alembic: Updated tests to reflect the current exporter

The differences:
- The old exporter always exported a mesh object to
`{object.name}/{object.name}Shape`. Now it exports to
`{object.name}/{mesh.name}` instead.
- Duplicated objects now have a unique numerical suffix.
- Transforms are always exported as inheriting, because Blender doesn't
have a concept of parenting without inheriting the transform.