newrelic/rpm — pull request #80 by wuputah (2012-10-24 01:33:23+00:00)
Title: Use debug level for at-boot logging

My reasoning is that the only way to opt-out of these message is to change my log level to :warn, which is what I would (reasonably) use to log useful information from my application. I believe I would only need to see these messages if I was trying to debug an issue with New Relic.