initialize Ohai::Loader and Ohai::Runner with Ohai::System
run v6 plugins that depend on v7 plugins in Ohai::System#run_plugins, #require_plugin
remove debug tools
Merge pull request #196 from opscode/OC-9364

Run v6 plugins that require v7 plugins
Add a wrapper for Mixlib::ShellOut
Converted plugins/erlang to Mixlib::ShellOut
Converted plugins/groovy to Mixlib::ShellOut
Converted plugins/c to Mixlib::ShellOut.
Converted plugins/darwin/cpu to Mixlib::ShellOut.
Converted plugins/darwin/filesystem to Mixlib::ShellOut.
Converted plugins/darwin/hostname to Mixlib::ShellOut.
Converted plugins/darwin/kernel to Mixlib::ShellOut.
Converted plugins/darwin/network to Mixlib::ShellOut.
Converted plugins/darwin/platform to Mixlib::ShellOut.
Converted plutins/darwin/system_profiler to Mixlib::ShellOut.
Converted plugins/darwin/uptime to Mixlib::ShellOut.
Converted plugins/java to Mixlib::ShellOut.
Converted plugins/lua to Mixlib::ShellOut.
Converted plugins/mono to Mixlib::ShellOut.
Converted plugins/nodejs to Mixlib::ShellOut.