* creating a color space now leads through the color_space_creator
  object which allows us to fail at ceating the color space
* there are now three ways to create a color space. From an ICC profile,
  from well-known names and parametrically.
* multiple color_management_outputs can now be created for a single
  wl_output
* color_space_changed is not send when the object is created anymore
* clearify that destroying a color space has no effect on the color
  space state associated with surfaces and outputs
* preferred color space is send only after it is determined or changed
* preferred color space is send to all matching wl_outputs

Signed-off-by: Sebastian Wick <sebastian@sebastianwick.net>