Bug#784015: undeclared file conflict between libc6-i386 and libc6-mipsn32

[Helmut Grohne <helmut@subdivi.de>]

Package: libc6-i386,libc6-mipsn32
Version: 2.19-18
User: helmutg@debian.org
Usertags: rebootstrap

| dpkg: error processing archive /tmp/repo/pool/main/g/glibc/libc6-mipsn32_2.19-18_mips.deb (--unpack):
|  trying to overwrite '/usr/lib32/gconv/ANSI_X3.110.so', which is also in package libc6-i386 2.19-18

I am filing this as a new bug report instead of merging it into #745552,
because I believe that this instance is easily fixable.

It should be possible to have the multilib packages with matching
multilib directories declare conflicts against each other as no M-A:same
is involved here.

The loader conflict issue shall remain with #745552.

Helmut