alembic-1.7.12-bp153.1.17

- Update to version 1.7.12
  API:
  + Use critical section instead of mutex on Windows. (PR220)
  * ErrorHandler now uses const char * for message instead of
    std::string for efficiency gain. (PR221)
  + Fix incompatibilities with C++17. (PR237)
  * Add optional DCC FPS hint when calling CreateArchiveWithInfo
    and GetArchiveInfo. (PR241)
  Maya:
  + AbcExport: Support writing animated facesets. (PR217)
  + AbcExport: Support per curve width. (PR239)
  * AbcExport: When writing sparse data like just the UVs, create
    an OObject instead of an OXform. (PR241)
  Utils:
  * WFOBJConvert: Fix bug where OBJ files with more than one
    shape would fail to properly convert UVs and Normals. (PR232)
  CMake:
  * Make it easier to select the python version to build against.
    (PR215)
- Clean up spec, remove any superflous parameterization

- Avoid forcing SSE/SSE2 on %ix86, it is not guaranteed to exist.

- Move documentation to -dev subpackage.

- version 1.7.11: initial build