tar package: swap out bin/bash for /usr/bin/env bash
Merge branch 'master' of github.com:aphyr/riemann
Load defaults from /etc/default

On debian-based systems the location for default files is `/etc/default` (singular), not `/etc/defaults` (plural).
Merge pull request #265 from overthink/master

Load defaults from /etc/default
Merge branch 'master' of github.com:aphyr/riemann
index: fix a bug in expiry which broke events without ttls.
Add logstash client based on existing graphite client
Fix a bug in riemann/pool always setting :block-start true.
Add support for passive Nagios checks
Merge pull request #266 from tjake/add-logstash

Add logstash client based on existing graphite client
Change nagios to take opts
Fix logstash host

Need to make sure that we send the host as "source" as well as "host", as
they recently changed the name.

Also, remove references to "graphite" in the logstash (copy-paste fail)
Use clj-nagios 0.0.3
Improve tests
Merge pull request #268 from carlyeks/logstash.host

Fix logstash host
Merge pull request #267 from bracki/passive-nagios-checks

Add support for passive Nagios checks