Review: Added OCIO_VERSION_HEX to public header for easy version comparison
Jeremy Selan <jeremy...@...>
This exposes a single 4-byte hex number, e.g. 0x01050200 == 1.5.2
Use this for numeric comparisons, e.g. #if OCIO_VERSION_HEX >= ...
Note: in the case where SOVERSION is overridden at compile-time, this
will reflect the original API version number.
Code concept is stolen from cpython source.