- don't need to extract the file.
- actually include the 'regexes.yaml' in the jar when building ;)
  Fixes LOGSTASH-1051
- don't include patch or build if they're nil
- Add test coverage for LOGSTASH-1051
- Add coverage for LOGSTASH-1051
- add perf configs used in recent perf tests.
- make event["@message"] = "bar" set a top-level field even if @message
  doesn't exist. This fixes bugs like doing
  add_field => [ "@message", "foo" ] was previously setting
  @fields.@message
- don't assume we're running from the jar.
Merge git://github.com/logstash/logstash