api: Switch to a 2-level namespace #1922
Merged
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Related OIIO PR: AcademySoftwareFoundation/OpenImageIO#4567
Like in the corresponding OIIO PR, I'm proposing switching to a 2-level namespace scheme (basically,
OSL::v1_14
instead of the current `OSL_v1_14) because that opens the door to possible future schemes to preserve better ABI compatibility between minor releases.I would like to squeeze this in before I finalize a 1.14 beta, so that it doesn't change again during the beta period.
Also, I changed some macro names.