[CMake] CPack Directory entries in zip files

[Jakub Zakrzewski]

Hi All!

Recently we've moved all our packaging to CMake. For historical
reasons however, we need to have directory entries in our zip files.
CPack unfortunately generates archives with only file entries
included. Is possible to get desired behaviour by setting some
variables or changing some config files (or however)?
-- 
Pozdrowienia
Jakub