Bug#810514: lib32stdc++6-6-dbg, libx32stdc++6-6-dbg, libgccjit-6-doc: missing Breaks+Replaces on their *-5-* counterparts

[Andreas Beckmann <anbe@debian.org>]

Severity: serious
Followup-For: Bug #810514
User: debian-qa@lists.debian.org
Usertags: piuparts

Hi,

during a test with piuparts I noticed your package fails to upgrade from
'sid' to 'experimental'.
It installed fine in 'sid', then the upgrade to 'experimental' fails
because it tries to overwrite other packages files without declaring a
Breaks+Replaces relation.

See policy 7.6 at
https://www.debian.org/doc/debian-policy/ch-relationships.html#s-replaces

>From the attached log (scroll to the bottom...):

  Selecting previously unselected package lib32stdc++6-6-dbg.
  Preparing to unpack .../lib32stdc++6-6-dbg_6-20160103-1_amd64.deb ...
  Unpacking lib32stdc++6-6-dbg (6-20160103-1) ...
  dpkg: error processing archive /var/cache/apt/archives/lib32stdc++6-6-dbg_6-20160103-1_amd64.deb (--unpack):
   trying to overwrite '/usr/lib32/debug/libstdc++.a', which is also in package lib32stdc++6-5-dbg 5.3.1-5

  Selecting previously unselected package libgccjit-6-doc.
  Preparing to unpack .../libgccjit-6-doc_6-20160103-1_all.deb ...
  Unpacking libgccjit-6-doc (6-20160103-1) ...
  dpkg: error processing archive /var/cache/apt/archives/libgccjit-6-doc_6-20160103-1_all.deb (--unpack):
   trying to overwrite '/usr/share/info/libgccjit.info.gz', which is also in package libgccjit-5-doc 5.3.1-5

  Selecting previously unselected package libx32stdc++6-6-dbg.
  Preparing to unpack .../libx32stdc++6-6-dbg_6-20160103-1_amd64.deb ...
  Unpacking libx32stdc++6-6-dbg (6-20160103-1) ...
  dpkg: error processing archive /var/cache/apt/archives/libx32stdc++6-6-dbg_6-20160103-1_amd64.deb (--unpack):
   trying to overwrite '/usr/libx32/debug/libstdc++.a', which is also in package libx32stdc++6-5-dbg 5.3.1-5


cheers,

Andreas