hmm, I understand your concern, but this is required in some way or another.

If `makeopts` is a list of strings to iterate over, then `buildopts` will be set to it too, and the list elements will be provided one by one. But, if we drop `makeopts` from `ITERATE_OPTIONS`, this won't happen with `makeopts`; it wil always stay defined as the list of options.

So, easyblocks using `makeopts` will fail... Until we drop `makeopts` all together, this needs to be here.