[logback-dev] Potential contribution - FallbackAppender

[Durchholz, Joachim]

Heh. I thought I could pick up the configured appenders from the context, but that's not the case - seems like Joran is responsible for that.
So the configuration would look different, more like

<appender ... class="...FallbackAppender">
  <appender-ref ref="..."/>
  ...
</appender>

No idea what I'd need to do to make that fly; digging around in the code and docs right now.