[wwwdocs] Updates for hot/cold attribute and -mcmodel=large

[Gerald Pfeifer]

Hi Honza,

Jan Hubicka wrote:
> this is for the new user visible features comitted today...

thanks for the patch.

> Index: changes.html
> ===================================================================
> +     <li>New function attributes <code>hot</code> and <code>cold</code>
> +     was introduced.  Functions marked by <code>hot</code> attribute

was -> were
by -> by the

> +     performance to code size tradeoffs are biassed towards the performance.

biased
omit "the" before "performance

> +     Functions marked by <code>cold</code> attribute are placed

by -> by the

> +     to code size tradeoffs are biassed towards the code size. Additionally
> +     the calls to cold functions are predicted as unlikely.

biased
omit "the" before "code size" and "calls"

> +     <li><code>-mcmodel=large</code> is now supported on x86-64
> +         compilation.</li>

Perhaps just "support on x86-64"?

Okay with these changes.

Gerald