'cygport dep' is empty for orpie

[Andrew Schulman]

> > orpie builds and runs fine. But surprisingly, 'cygport dep' comes back empty:
> >
> > $ cygport orpie.cygport dep
> > $
>
> WFM:
> 
>  >>> Packaging orpie-1.5.2-3.x86_64
>  >>> Creating binary package(s)
>  >>> orpie-1.5.2-3.tar.xz
> [snip]
>  >>> Checking packages for missing or duplicate files
>  >>> Creating source patches
>   0 files changed
>  >>> Creating source package
> [snip]
>  >>> orpie requires: cygwin libgsl19 libncursesw10
>                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

This still doesn't work for me. On two different build hosts, dep returns empty,
and the .hint files have empty dependency lists.

I've been trying to debug this in __list_deps(). That's a long function and I
don't see yet where it's supposed to catch usr/bin/orpie. But I can see that
alldeps is empty at the final find command.