[gfortran,patch] Fix intrinsics used as actual arguments

[FX Coudert]

>>   -- make m4 generate new files for AIMAG, ASINH, ACOSH and ATANH   
>> specifics
>>  -- use a new simple m4 file (misc_specifics.m4) to generate code   
>> for other specifics (including character functions)
>
> The copyright years need changing.  Are these sufficiently  
> different in your opinion that you should appear as the contributer?

OK for copyright years. I don't think there's reason enough to put my  
name in these files.

>>   -- a gfc_resolve_index_func function is added to resolve the  
>> INDEX  intrinsic, so that it can be used as actual argument (PR  
>> 16580)
>
> Add a comment as to why you  call it gfc_resolve_index_func, rather  
> than gfc_resolve_index, above the entry in intrinsic.c.  I think  
> that it is the only exception, is it not?

Hum... (noises of brain searching through old memories)...  
(grepping)... There's also gfc_check_access_func (which was my doing  
too). I'll add the comments.

Thanks for the review!
FX