[PATCH] make SeekSlider and VolumeSlider "swift"

[Tanguy Krotoff]

> Just had a look at the code and unfortunately GPL is not acceptable for
> kdelibs, neither is it for Qt.

That's why I gave the email of Ricardo Villalba :) (again:
rvm at escomposlinux.org)

It would be very surprising if he refuses. It's 50 lines of code and
as you can see 90% of it is taken from qt/src/qslider.cpp
I let the original copyright: I prefer to be totally transparent even
for 50 lines of code - legal issues is not a joke.
Sending a mail to Ricardo cost zero! He will probably be very happy to
receive an email from Nokia telling him his solution is elegant!
I know Ricardo, I can do it if you want, but I think it's better if
you send him an email asking him for public domain or whatever (I
guess the best solution - no ambiguity - is for him to upload on
SMPlayer repository a public domain version of myslider.cpp).