sim: replacing ChangeLog files with online git logs

[Joel Brobecker]

Hi Mike,

> > > Can you hold off on this for now? We're discussing it within the group
> > > of GDB Global Maintainers, and we need more time to converge.
> how goes it ?

We're making progress. But is often the case with a group of volunteers
working via email, things take time. It's an important decision, so
it's important we take the time needed to finalize this.

-- 
Joel