[patch, fortran] PR38573 Missing markers for translation

[Jerry DeLisle]

--- snip ---
>> For the construction of diagnostics from separate parts, it is harder,
>> especially if we don't want to introduce further -Wformat-security warnings.
>> For construction of a message from parts, it is of course fine if the %s
>> or %qs provided strings are language keywords that aren't meant to be
>> translated.
>>
--- snip ---

The other choice of course is to not split the messages and do one error message
per case.