[Patch] clearButtonClicked signal for KLineEdit

[Mathias Soeken]

Mathias Soeken wrote:

> Hi,
> 
> I added a signal which is emitted when the user clicked on the clear
> button in a KLineEdit widget.
> 
> I could use it for the kmail application, where it is a difference whether
> the text is cleared or the user clicks on the button.
> 
> Best regards,
> Mathias

So, there are pros and cons? Can I commit it?

Mathias