improved parsing of syslog additional fields
print message counts in statistics mode
benchmarking showed that the execution handler threads had no effect
bump graylog2-plugins version
make counters non blocking;

make periods of writes to mongo longer, because mongo hits CPU. made it simple by changing constant from 5 to 60 seconds.  for generic purpose it may be limited adaptively (by updates/sec) or just configured in .conf
(cherry picked from commit e23efcc0bdba3dc3c8818de900595074bbf25ec0)

Conflicts:

	pom.xml
simple benchmarking using a written msgs counter

fixes #SERVER-272
upgraded to ElasticSearch v0.20.4

fixes #SERVER-276
start AMQPSyncInitializer on non-master nodes too

fixes #SERVER-278 (i hope)
AMQP queues are no longer auto-delete

fixes #SERVER-279
Processor was not writing batches to all outputs

fixes #SERVER-271
bumped version to 0.10.0-rc.4
requeue messages if buffer is full

fixes #SERVER-283
no longer requiring rule regex to fully match

fixes #SERVER-284
retry master detection after stale timeout

fixes #SERVER-281
Merge branch 'develop' into otter