[PATCH, wwwdocs] Update gfortran support of Fortran standards and features

[Harald Anlauf]

Am 15.01.26 um 7:57 PM schrieb Jerry D:
> On 1/14/26 12:37 PM, Harald Anlauf wrote:
>> Dear all,
>>
>> we haven't updated the gfortran wiki since ages, so I thought
>> to give it a try.  See attached for a proposal.
>>
>> I did not yet touch the list of contributors.  So dear
>> co-developers, would you please make suggestions whom to add?
>>
>> Thanks,
>> Harald
>>
> 
> Patch reads well here.
> 
> Jerry
> 

Thanks, Jerry!

I was reminded by Paul off-list that I might have created confusion,
as this is not the wiki, but the main landing page of gfortran:

https://gcc.gnu.org/fortran/

Nevertheless, I want to encourage all of you to make sure that the
status of gfortran is updated in a timely manner.  We can do that
even between releases.  Also the wiki may need attention.

Harald