def cp_r(src, dest, options = {})
    fu_check_options options, OPT_TABLE['cp_r']
    fu_output_message "cp -r#{options[:preserve] ? 'p' : ''}#{options[:remove_destination] ? ' --remove-destination' : ''} #{[src,dest].flatten.join ' '}" if options[:verbose]
    return if options[:noop]
    options = options.dup
    options[:dereference_root] = true unless options.key?(:dereference_root)
    fu_each_src_dest(src, dest) do |s, d|
      copy_entry s, d, options[:preserve], options[:dereference_root], options[:remove_destination]
    end
  end
Options: preserve noop verbose dereference_root remove_destination

Copies +src+ to +dest+. If +src+ is a directory, this method copies
all its contents recursively. If +dest+ is a directory, copies
+src+ to +dest/src+.

+src+ can be a list of files.

# Installing ruby library "mylib" under the site_ruby
FileUtils.rm_r site_ruby + '/mylib', :force
FileUtils.cp_r 'lib/', site_ruby + '/mylib'

# Examples of copying several files to target directory.
FileUtils.cp_r %w(mail.rb field.rb debug/), site_ruby + '/tmail'
FileUtils.cp_r Dir.glob('*.rb'), '/home/aamine/lib/ruby', :noop => true, :verbose => true

# If you want to copy all contents of a directory instead of the
# directory itself, c.f. src/x -> dest/x, src/y -> dest/y,
# use following code.
FileUtils.cp_r 'src/.', 'dest'     # cp_r('src', 'dest') makes src/dest,
# but this doesn't.