As OSL headers mix #include <OpenEXR/foo.h> and #include <foo.h>, we need both /path/to/openexr/include and /path/to/openexr/include/OpenEXR include paths... :/
Issue investigated by doug65536 on IRC, thanks.
made some small edits
- removed changes to AVI reading since the data types are apart of the format spec.
- absf -> abs for a double value in render code.