/usr/share/lintian/overrides/libreoffice-core is in libreoffice-core 1:3.5.4+dfsg2-0+deb7u6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | libreoffice-core: binary-or-shlib-defines-rpath
libreoffice-core: postinst-uses-db-input
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