[Coco] 6309 port of NitrOS-9 Level 1

[Tormod Volden]

On Sun, Jan 25, 2015 at 3:05 AM, Robert Gault wrote:
> Tormod,
>
> One thing I consider critical. Don't post any Level1 Coco3 patches without
> testing the results. There is at the moment fair degree of
> non-reproducibility for 6309 results and it is vital to check that Level1
> 6809 packages still work.
>
> Some of these changes could be carried over to Level2 making double checking
> of results that much more important. I've been known to make mistakes and
> have oversights in reporting code. :)

No worries. I carefully review everything that I apply. And I don't
allow any non-relevant changes into the commits. This way you can
prove that non-6309 builds are not affected - their module CRC remain
constant.

As an example the coco2 modules rbf, scf and rel still have the same
CRC as in the 3.3.0 release, even after yesterday's 6309 fixes. From
running "hg log" on the source files, they probably haven't changed
since respectively 2012, 2009 and 2005...

Tormod