genscripts comment tidy

[Nick Alcock]

On 16 Oct 2019, Nick Clifton spake thusly:

> Hi Nick,
>
>>> -# A .x script file is the default script.
>>> -# A .xr script is for linking without relocation (-r flag).
>
>> Is this stuff still documented anywhere after this commit?  
>
> No. :-(  But it would be nice to have.  Fancy writing a node in
> the ld.texi file ?

Maybe in a week or two. I really really want to get a working CTF
deduplicator posted here first. :)