/*
 *  call-seq:
 *     Dir[ array ]                 => array
 *     Dir[ string [, string ...] ] => array
 *
 *  Equivalent to calling
 *  <code>Dir.glob(</code><i>array,</i><code>0)</code> and 
 *  <code>Dir.glob([</code><i>string,...</i><code>],0)</code>.
 *
 */
static VALUE
dir_s_aref(int argc, VALUE *argv, VALUE obj)