im new to this but i did not found anything related while searching the site.
Could it be that you use a custom dru file for eagle? Can you please upload it somewhere?
//Edit since no one replied so far. I already got a second question. :D
Is the datasheet version 1.21(2012.4.6) the last public accessible or is there already a newer version?
If I understand correctly you need information about the schematics used to manufacture the PCB. If there is no information on the Olimex website, then only one of their employees can answer that. Maybe see if there is an email address for support?
all information about the PCB is inside Eagle CAD files, your request for dru file makes no sense, what exactly do you want to know? the layer stackup is described in Eagle BRD file DRU