This adds a "Paste" command to the toolbar which sends the current
clipboard content to the remote host as key presses.
Not implemented for RDP as we appear to defer to rdesktop and I'm not
sure if we can reliably do it there (also krdc RDP isn't working for me
right now).
This enables compilation under both Qt3 and Qt4
git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdenetwork@1237912 283d02a7-25f6-0310-bc7c-ecb5cbfe19da