Housekeeping work in backends.html

[Eric Botcazou]

> H - you could argue a hardware implementation does not exist as it's a
>      virtual target, but it can obviously be compiled down to run on
>      hardware that does exist.

Agreed.

> Q - "registers" are typed and you can declare 64 bit registers, so
>      probably this is true

OK.

> f - Not even sure what this is about. It only defines a small epilogue
>      pattern.

I think this means that the port still uses asm prologue/epilogue.  That's not 
the case here, so 'f' should probably be omitted and 'g' be added.

As a matter of fact, there are no ports left with 'f'.

> a - Port uses neither LRA nor reload. Might be a new characteristic
>      (along with several others).
> 
> The closest string is probably
> 
> SQCqfbde

Thanks, I have installed "SQCqgbde" based on the discussion above.

-- 
Eric Botcazou