Hi Guys,

updating latest GDAL I noticed that one of the potential dependency was 
orphan.

As the current upstream code of the two interlinked packages openexr and
ilmbase is currently merged I propose to do the same

https://github.com/AcademySoftwareFoundation/openexr/tags


version 3 does not build, so for the time being, I will release the 
latest 2.5.8 version

Attached cygport.
I am aware that not all tests pass cleanly


Regards
Marco