Merged window event and window-canvas-event callbacks

Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
Reverted removal of line/box drawing functions in canvas

Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
Reverted button drawing to use canvas drawing functions

Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
Reverted edit box drawing to use canvas drawing functions

Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
Reverted frame drawing to used canvas drawing functions

Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
Reverted group box drawing to use canvas drawing functions

Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
Reverted progress bar drawing to canvas drawing functions

Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
Reverted scroll bar drawing to user canvas drawing functions

Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
Reverted tab group drawing to using the canvas drawing functions

Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
Removed skin pixmap

Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
Fixed skin setting

Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
Removed old skin configuration files

Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
Removed skin pixmap from WinDOS port

Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
Fixed memory canvas box drawing

Remaining problems with memory canvas:
 - Color in WinDOS window appearers too bright (alpha blending??)
 - singlasandslots.exe pixmap is cut in half

Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
Removed unused/unimplemented stretch blending functionallity

Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>