PATCH: Double buffering and other cosmetic fixes

[Valentine Sinitsyn]

Hi Michael,

> I asked the same question on kde-devel, and they recommended to use a
> pixmap without a background and an alpha channel instead.
> Maybe that is the way to go.
As far as I know - this wouldn't help, I was thinking bout it before 
implementing the path in its present form. The problem with alpha cannel 
is you need to erase the pixels which are "behind" transparent ones - 
this mean flicking. Please correct me if I'm wrong.


Regards,
Valentine