bug#6117: 24.0.50; dired-marked-face same as dired-flagged-face

[Juri Linkov]

> I'm also going to install changes in packages related to dired
> that use faces for marked/flagged for deletion:

Installed.

I also think it makes sense to create a new face `line-number'
and inherit from it in `compilation-line-number'.  Another place
that could use this face is Occur to highlight line numbers
in the *Occur* buffer.