Alpine linux package definitions with some tweaks for use by the rsyslog project. Includes things like newer versions, different options or extra packages (including backports from edge).

We try to contribute back to the alpine linux project, but we probably always need some functionality that can't make it into the official tree. Anyhow, we really try to keep our extras as small and limited as possible.

We use https://github.com/rgerhards/docker-alpine-abuild/tree/master-rger to build the packages.