NEWS: Mention new native MinGW configuration

[Pedro Alves]

Eli Zaretskii wrote:
> 
>> +* GDB can now be built as a native debugger on native x86 Windows
>> +(mingw32) systems for debugging Portable Executable (PE) executables.
>> +
> 
> Fine with me, but the second "native" should be removed, IMO.
> 
> In fact, I suggest the following text:
> 
>   GDB can now be built as a native debugger for debugging Windows x86
>   (mingw32) Portable Executable (PE) programs.
> 

Thanks, checked in with your suggestion.

Cheers,
Pedro Alves