Hello,

In this iteration of the patch I've modified the debuginfod
progress function so that it does not preserve the value
of quit_flag when the user enters ctrl+c. Progress
updates now print the completion percentage of the
download. Additional help text is also printed before and
after a query which provides context for what file is being
searched for and whether the download was successful.

On IRC we discussed changing the behavior of ctrl+c
during a download depending on whether an inferior
is running. This change will come in a future patch at
some point before the next release.

Aaron