kconfigwidgets should install have kf5_entry.desktop

[Albert Astals Cid]

Hi David, kf-ers

KLanguageButton is using kf5_entry.desktop as seen on 
http://lxr.kde.org/search?v=kf5-qt5&_filestring=&_string=+KLanguageButton

It seems that the packaging scripts are not aware of it and thus it is not 
getting packaged/installed.

David can you make sure the files get packaged and installed for the next 
frameworks release?

Do you want a bug?

Cheers,
  Albert