code: function filesFromFileSet (dirname, fileset) {
    if (!fileset.includes || !fileset.includes.length) {
      return [];
    }
    return fileset.includes
      .filter(include => !glob.hasMagic(include))
      .map(include => path.join(dirname, include));
  }
docs: The includes in a fileset may be globs or they may be individual files.
  This extracts all of the individual files and makes them absolute.
  
  @param {!string} dirname
  @param {!Array<{includes: Array<string>}>} fileset
  @returns {!Array<string>}