Expanding macros for readability.

[Luke Yelavich]

On Thu, May 21, 2015 at 01:29:56AM AEST, Jeremy Whiting wrote:
> Luke,
> 
> Thanks for the feedback. I cherry-picked the two expanding macros
> changes on master here and combined them into one patch. I also added
> the pitch_range that is on master but not 0-8 branch since it was
> using SPD_GET_COMMAND_INT also. I guess this patch can be added to
> master if it looks ok to you. Probably not worth changing it or trying
> to apply on 0-8 since it's just a macro expansion, no new
> functionality or features.

Only problem is that if we don't put this in 0.8, any API additions we make 
will be harder to port from master, so I'll cherry-pick accross for ease of 
maintenance.

Luke