bug#21973: [External] : bug#21973: 24.5; feature proposal: make dired header clickable

[Drew Adams]

Looked at this only quickly.

+1.  It's a good idea to make dir-listing headers
into, essentially, clickable/RETable breadcrumbs.

I can't speak to whether the patch sent is the
best/right way to do it - don't have time now to
look into it.

But this should be done (maybe optionally, i.e.,
under user control) for each dir header in the
buffer.  That is, do it for inserted subdir
headers, as well as for the first (top-level)
dir header.