search for: paint_screen_no_background_mask

...and more flexible for viewport independent background image solution. Removed wrapable background painting. The core part of the background painting code stays as a fallback, if no desktop window is present and no other plugin provides a different background solution. Plugins can use the PAINT_SCREEN_NO_BACKGROUND_MASK screen mask to disable this fallback. Use PAINT_SCREEN_NO_BACKGROUND_MASK instead of wraping paintBackground. Use full screen output if overlapping output devices have been detected. This prevents that parts of the screen get painted twice (xrandr clone modes). Bump core ABI....