dpkg warning / zlib - timezone

[Michael Meskes <meskes@informatik.rwth-aachen.de>]

I just got this:

bash# dpkg -i /debian/development/binary/base/timezone-7.46-1.deb 
(Reading database ... 27070 files and directories currently installed.)
Preparing to replace timezone (using .../development/binary/base/timezone-7.46-1.deb) ...
Unpacking replacement timezone ...
dpkg - warning, overriding problem because you used --force:
 trying to overwrite /usr/lib/libz.a', which is also in package zlib1-dev
Setting up timezone ...

First of all I wonder if these libz.a are the same. But why was it
overridden anyway? I never used --force but still got this warning. There
seems to be no replaces line, too.

Michael

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