tinyobjloader-2.0.0rc9-bp156.3.1

- Use %autosetup macro. Allows to eliminate the usage of deprecated
  %patchN

- Update to version 2.0.0rc9
  * Latest release candidate
  * Minor documentation updates

- Update to version 2.0.0rc8+git.20210821:
  * Add new object oriented API. 1.x API is still provided.
  * Support line primitive.
  * Support points primitive.
  * Support multiple search path for .mtl(v1 API).
  * Support vertex weight `vw`(as an tinyobj extension)
  * Support escaped whitespece in mtllib
  * Add robust triangulation using Mapbox
    earcut(TINYOBJLOADER_USE_MAPBOX_EARCUT).
  * Fix CVE-2020-28589: tinyobjloader: An improper array index
    validation could lead to code execution.

- Ensure neutrality of descriptions.

- Initial package, version 1.0.6