bug#41688: [PATCH] Add rsyslog

[Ricardo Wurmus]

Hi,

I’ve followed Ludo’s suggestions for the remaining package definitions
and pushed the result to the “master” branch.

Among the changes:

- fixed and clarified licenses
- removed per-module outputs
- removed default configure flags and added a comment about enabling
  optional features
- enabled tests
- removed “dev” output
- used new input style

Now I guess we’ll need an rsyslog service :)

Thank you, Katherine, for the patches and your patience!

-- 
Ricardo