In preparation for merging the setscene and normal task execution,
uniquely namespace the scenequeue specific functions.
For the one shared function, add the "sq_live" variable so we know
which functions to send the results to.
(Bitbake rev: 2cbe9399902ba67dca566c7344b2247412cf4d5c)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>