Release: OSL v1.12.9.0

Larry Gritz

We have tagged v1.12.9.0 as the latest production release and moved the
"release" branch marker to that point. This is guaranteed to be API,
ABI, and link back-compatible with prior 1.12 releases. Release notes
are below.

Release -- 1 Feb 2023 (compared to
* Remove unnecessary setting of locale::global. #1630
* Batch shading: Fix bug with masked wide glosure generation. #1637
* Make sure ReParameter() has the same relaxed type checking rules as
Parameter(). Before, it was stricter about type conversion. #1639
* Windows: Fix some GPU build errors. #1638

Larry Gritz