We only want this set when GAIA_MEMORY_PROFILE=low.  So basically this is just here for when we have to update the Tarako to use a newer version of the camera.  I don't know if that will ever happen, and if you (the camera team) don't think it is worth picking up the low-memory optimizations into master, I'm okay with that. There's just a chance that we'll have to add them back in later.  And so if we can get them in now, that seems better to me.

But certainly we don't want those low-memory optimizations on by default as this line implies!