Should export be stripped by the .di generator?

[Benjamin Thaut]

I'm wondering if the export keyword should be stripped by the .di 
generator of dmd or not.
Lets say DLL 2 imports DLL 1s import files. Will that not cause DLL 2 to 
also export the the symbols of DLL 1?

How much wanted is a dll version of druntime and phobos?
Kind Regards
Ingrater