The old version should get repalced by the ure package. It should also conflict
with the new ure package.

This commit adds support for %incompat epm tag. It produces conflicts in rpm
and deb. It can be defined in setup_native/source/packinfo by
linuxincompat.

This commit also removes obsolete hack for debian dependencies.
libreoffice-bundled conflict is mentioned in the desktop-integration package
these day. The hack in epmfile.pm was not used because no package
used "replace" tag.

Change-Id: I5e9cb89a6108c22c61287fce1ffc6baf3f618d15
Reviewed-on: https://gerrit.libreoffice.org/2260Reviewed-by: Fridrich Strba <fridrich@documentfoundation.org>
Tested-by: Fridrich Strba <fridrich@documentfoundation.org>