Make the compositor used the new color namespace
Use the new namespace functions
More porting
Port the orc files to the color namespace

Make the compositor use it
Remove almost every libargb.h include
Remove useless code
Remove complete the libargb dependency
Remove old libargb library
Final removal of every libargb related call
Use the correct naming
Make sure to use the destination color
TODO--
The pattern renderer was already refactored
Everything's done here
The luminance was added as a channel

It is alrady used as part of the compositor internal API