QStyleSheet: gradient background image incorrectly rendered.

209123 introduced a regression into stylesheet handling of gradient background image. The regression appears in 4.5.0 onwards.

To reproduce:

"QPushButton"
"

{" "background-color: qlineargradient(x1: 0, y1: 0, x2: 0, y2: 1, stop: 0 rgb(255, 0, 0), stop: 1 rgb(0, 255, 0));" "border-image: url(border_normal.png) 2 2 2 2 stretch stretch;" "border: 2px transparent;" "}

";

I reproduced this in Windows.

Try with 4.4.3 and then 4.5.0 - the 4.5.0 image appears to be mixed with the background colour of the widget and the gradient is not correct for a linear gradient.