Drag & Drop on RC1

[bqbauer]

This may not actually be a bug. From the time it was first introduced, I've been unable to drag folders to a guest. It results in an empty folder on the guest. Individually dragged files work, just not folders.

This is true with Windows or Solaris hosts. The docs say it's only for Linux guests, but I've found it works identically for Linux or Solaris.