Desire to allocate bit in DT_PARM bitmask for DEC FORMAT compatibility purposes

[Jeff Law]

On 03/23/2018 02:12 AM, Jakub Jelinek wrote:
> 
> We can certainly offer a warning with suggested fixit, if the compiler sees
> the format string with ommitted widths, it can warn that it is a DEC
> extension and hint how to rewrite the string with the default width so that
> users can change it (does Fortran FE also have the -fdiagnostics-generate-patch
> support?). 
And I've suggested this as a way to start the process of modernizing the
format statement handling :-)

Jeff