Bug894

This is an implementation of https://redmine.openinfosecfoundation.org/issues/894https://redmine.openinfosecfoundation.org/issues/894 (cleanup output).

The output in default notice verbosity (default in new YAML) is very light:
```
# bin/suricata -S etc/suricata/rules/reject.rules -i eth0  
[1009] 3/10/2013 -- 15:02:31 - (suricata.c:926) <Notice> (SCPrintVersion) -- This is Suricata version 2.0dev (rev 693c19e)
[1009] 3/10/2013 -- 15:02:31 - (tm-threads.c:2192) <Notice> (TmThreadWaitOnThreadInit) -- all 4 packet processing threads, 3 management threads initialized, engine started.
[1009] 3/10/2013 -- 15:02:32 - (suricata.c:2153) <Notice> (main) -- Signal Received.  Stopping engine.
```
More verbosity can be achieved via -v option (multiple v can be used).

Buildbot prbuild: https://buildbot.suricata-ids.org/builders/regit/builds/45