[pkg-fso-maint] Bug#695272: libphone-utils0: harmful postrm purge action in M-A:same package

[Helmut Grohne]

Package: libphone-utils0
Version: 0.1+git20110523-1.2
Severity: serious

It is technically possible to install libphone-utils0:amd64 and
libphone-utils0:i386 in parallel. If I then purge libphone-utils0:i386,
/etc/phone-utils.conf will disappear even though it is still needed by
libphone-utils:amd64. This is due to the postrm script not taking
multiple installations of the same package into account.

Helmut