[PATCH] Add support for the __flash qualifier on AVR

[Pierre Langlois]

Hello Joel,

>
> Sorry about the delay in reviewing this. Some comments below.
>

That's OK, thank you very much for the review!

>> +  // __flash qualifier
>
> Please do not use C++-style comments for the moment.
>

Oh dear, I'm sorry about this.

Thanks,

Pierre