Statsd integration + Tomcat redeploy fix for PeriodicalLog

[pcting]

Two things in this pull request:

• I added a StatsdLog which will allow speed4j to emit statsd metrics
• c_factories is set to null at the end of StopWatchFactory.shutdown() so that Tomcat can redeploy the application and also reinitialize speed4j in the process.

[jalkanen]

Yah, I think that just adding the license would be sufficient. Thanks!

[mailsurfie]

is this feature included in the trunk source? and should this issue be closed?

[pcting]

no, i've been lazy about reformatting the code to be accepted. i'll try to spend time on it; it'll probably only be an hour's worth of work.

[pcting]

i finally got around to pinging the statsd guys:
statsd/statsd#122

we'll know whether we can use the code soon

[mrtazz]

Isn't the MIT license compatible with the ASL? From what I've read so far, it should be ok to use it within the project. Or is that a specific project restriction?

[pcting]

@jalkanen will you be okay if i tacked on the MIT license instead of ASL for just the StatsdClient.java file?

[jalkanen]

MIT license is fine!

[pcting]

@jalkanen I adjusted the commits to fit the coding style and added the MIT license to the top of the StatsdClient class.

[jalkanen]

Thank you :-)