def find_runfiles
      result = []
      dirs = runfile_folders
      dirs.each do |d|
        found = Dir[File.join(d, '*.runfile')]
        result << found unless found.empty?
      end
      return result.empty? ? false : result.flatten.uniq
    end
def find_runfiles
      result = []
      dirs = runfile_folders
      dirs.each do |d|
        found = Dir[File.join(d, '*.runfile')]
        result << found unless found.empty?
      end
      return result.empty? ? false : result.flatten.uniq
    end
Find all *.runfile files in our search difrectories