Bug#908650: reportbug: replaces package with source package for ROM package removal

[Drew Parsons <dparsons@debian.org>]

Package: reportbug
Version: 7.5.0
Severity: normal

Sometimes we need to report an RM bug against ftp.debian.org to remove
a binary package which is no longer built.

reportbug deals with this in the interface for ftp.debian.org, asking
you for the name of the which package you want removed.

But then after you specify the binary package that needs to be
removed, reportbug switches the Subject for the bug report to the
source package instead of the binary package.  This means the package
needing removal is misrepresented and there is a danger the ftp team
will remove the entire source package.  Not the outcome we want.

A recent example is #907513 requesting to remove mshr-demos.
reportbug altered the Subject to mark mshr for removal instead of
mshr-demos. (Fortunately Adrian Bunk saw and corrected the mistake).


-- Package-specific info:
** Environment settings:
DEBEMAIL="dparsons@debian.org"
DEBFULLNAME="Drew Parsons"

** /home/drew/.reportbugrc:
mode advanced

-- System Information:
Debian Release: buster/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.18.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8), LANGUAGE=en_AU.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages reportbug depends on:
ii  apt                1.6.4
ii  python3            3.6.6-1
ii  python3-reportbug  7.5.0
ii  sensible-utils     0.0.12

reportbug recommends no packages.

Versions of packages reportbug suggests:
pn  claws-mail                                 <none>
pn  debconf-utils                              <none>
ii  debsums                                    2.2.3
ii  dlocate                                    1.07+nmu1
pn  emacs24-bin-common | emacs25-bin-common    <none>
ii  exim4-daemon-light [mail-transport-agent]  4.91-7
ii  file                                       1:5.34-2
ii  gnupg                                      2.2.10-1
pn  python3-urwid                              <none>
pn  reportbug-gtk                              <none>
ii  xdg-utils                                  1.1.3-1

Versions of packages python3-reportbug depends on:
ii  apt                1.6.4
ii  file               1:5.34-2
ii  python3            3.6.6-1
ii  python3-apt        1.6.2
ii  python3-debian     0.1.33
ii  python3-debianbts  2.7.2
ii  python3-requests   2.18.4-2

python3-reportbug suggests no packages.

-- no debconf information