Log Message:
graphics/kvantum: Update to 0.15.3

Changelog:
V0.15.3
---------
 -A better calculation of the part of a progressbar's internal text which is
 inside the indicator (this also fixes a small offset in KisSliderSpinBox).
 -Don't draw a progressbar's busy indicator if it's wider than the progressbar
 (although that never happens in practice).
 -Added a workaround for a new but small bug in the toolbar timer of
 Audacious 4.0.
 -Align a menu-item's text with others if its icon isn't null but its pixmap is.
 -Removed Qt4 related stuff with the default installation, at last.

Not noted in the Changelog, NetBSD specific patch has been merged upstream and
is no longer required.