[fortran PATCH] Minor ALLOCATE translation improvements

[Paul Thomas]

roger
> OK for mainline?
>   
OK of course.

Thanks
> implement the loops.  Effectively, outlining "x = 0" in these cases. 
> Presumably, stride==1 is typical in real code/benchmarks, and we only call
> this function if the array already has/needs a descriptor.  
I would have thought so.

Paul