mergesiteset automates upgrades of custom siteXY.tgz sets to a
different release of OpenBSD.

Modifications made to base system files are merged using merge(1).
Merge conflicts can be resolved in a text editor or with sdiff(1),
in a way similar to sysmerge(8).

Required OpenBSD installation sets will be downloaded and verified
automatically.

Root privileges are not required. Regardless, file permissions and
ownership are preserved in the generated archive. This requires the
bsdtar(1) utility from the archivers/libarchive port.

Authors:
Stefan Sperling <stsp@openbsd.org>
