GUI: Allow to set padding for left, right, top, bottom list element sides. Add ext property to image widget: image name = name + ext. Allow widget lists to access the stored value of guioption. Remove GAME::SetTrackImage as it is handled by image widget ext property now.
GRAPHICS: Add DDS texture loading support (DXT1/3/5).
Update SConscript.
Force Mesa(Linux) to advertise S3TC support to be able to load dds textures. Not tested.
GRAPHICS: Make sure to set all texture properties when loading dds.
GUI: Delay image widget texture loading until it is visible.
GUI: Fix controllist scroll logic and updatelist method.
GUI: Add support for row-height and col-width properties (which override padding settings) to guilist.
Merge branch 'master' of https://github.com/VDrift/vdrift