public static TableDesc getTableDesc(
      Class<? extends Deserializer> serdeClass, String separatorCode,
      String columns) {
    return getTableDesc(serdeClass, separatorCode, columns, false);
  }
Generate the table descriptor of given serde with the separatorCode and
column names (comma separated string).
ql/src/java/org/apache/hadoop/hive/ql/plan/PlanUtils.java