Review Request: Fix Applet::showMessage for KDE 4.6 and trunk

[Martin]

Hi,

I just wanted to say that I won't be online from Friday (11.02.2011) until 
Thursday (17.02.2011).
I hope I documented the issues well enough.

Feel free to push my patch if you think it's worth shipping it.
But please be aware that the signature of the signal might change again.
You can follow this thread if you want to know what's going on: [0].

Regards,
Martin

[0] http://mail.kde.org/pipermail/plasma-devel/2011-February/014997.html