[CMake] include_directories(...) versus set_directory_properties(PROPERTIES INCLUDE_DIRECTORIES ...)

[David Cole]

>> That's just the quick brain dump version. If necessary, I can 
actually
>> look at old commits, or the current code to try to refresh my memory.
>>
>
> I think that's needed. Can you do that research into the commits and
> discussion?


I know it's been a week now.... I'm still getting to this. Will re-open 
the discussion as soon as I've gotten through the review/research.