bug#6098: Fix for broken breakpoint handling in gud pdb

[Chong Yidong]

Syver Enstad <syver.enstad@cisco.com> writes:

> Patch for gud.el version 23.1 line 1636
>
> The point of this patch is to give pdb full paths so that one can set
> breakpoints
> in files outside the current directory.
>
> This is acheived by addding the %d specification to the command.

Your patch has been committed to trunk.  Thanks.