trivial-httpd: Add a --log-file option
trivial-httpd: Add a --log-file option

Might be useful to see what files the client wants to fetch.

Closes: #271
Approved by: cgwalters

gatispaeglis/ostree,gatispaeglis/ostree,GNOME/ostree,gatispaeglis/ostree,GNOME/ostree,GNOME/ostree,gatispaeglis/ostree,GNOME/ostree,GNOME/ostree,gatispaeglis/ostree,gatispaeglis/ostree