Merge pull request #5571 from MikeMcQuaid/supported-cleanup

Library/Homebrew/cmd/gist-logs.rb

Library/Homebrew/diagnostic.rb

Library/Homebrew/extend/os/linux/diagnostic.rb

Library/Homebrew/extend/os/linux/install.rb

Library/Homebrew/extend/os/mac/diagnostic.rb

Library/Homebrew/install.rb

Library/Homebrew/os.rb

Library/Homebrew/os/linux/global.rb

Library/Homebrew/test/diagnostic_checks_spec.rb

Library/Homebrew/test/os/mac/diagnostic_spec.rb

Library/Homebrew/test/support/lib/config.rb

Library/Homebrew/test/utils/analytics_spec.rb

Library/Homebrew/utils/analytics.rb