FileUtils#cp_r verbose mode prints output to stderr
I'm using a plugin in a Ruby on Rails application that uses FileUtils's cp_r method to copy files into place (with verbose mode on). When deploying my application with Capistrano, I get several "error" lines during this part (http://groups.google.com/group/capistrano/browse_thread/thread/64e95a26af3035cd?pli=1).
It appears that FileUtils#cp_r prints all output in verbose mode to stderr, even if the output is not erroneous (http://stackoverflow.com/questions/3163585/getting-executed-command-from-ruby-fileutils). It seems that fu_output_message (and related code) should be changed so that output goes to stdout and errors go to stderr, as usual.