[Quilt-dev] new import option

[Jean Delvare]

Hi all,

While updating the French translation of quilt, I noticed a new option
to import: -d. There are a few problems with it, or rather its
documentation:

* The usage wasn't updated.

* The description for option -d is poor. What are the "old" and "new"
patches? I take it that -d is only useful when overwriting an exiting
patch, so it really only makes sense when -f is also used. This should
be explicitely stated.

I can commit the fixes myself if only the person who added the option
can confirm I understood it right.

Thanks,
-- 
Jean Delvare