no more indexes - clean up API

[Adam Jackson]

On 5/14/12 12:40 PM, Dave Airlie wrote:

> The screen/scrninfo APIs are very into passing index values, that
> are then immediately used to lookup a global array, this is not
> an API, its whatever the opposite is.
>
> This set of patches changes all the API passing of screen indices
> (apart from the logging functions). It seriously breaks the driver
> API/ABI, and I've got a demo of some compat for it I've sent out before.
>
> I'll try and co-ordinate with Keith, Alex/Chris/Ben so that main 3
> drivers are compatible when we push the server with all these in it.
>
> I was holding back on this to try and get some bit by bit review, but
> it might be easier for someone to just block off an hour and go mad,
> so here goes.

Followup comments given as replies.  For the rest of the series:

Reviewed-by: Adam Jackson <ajax at redhat.com>

There's a lot of cleanup material if anyone really wanted to go after it 
after this, 4/19 for example I think we could drop FreeScreen from the 
ScrnInfoRec entirely with only modest driver fixups.

- ajax