determine whether two sequence names from a repeatmasker alignment match.

  :return: True if they are the same string, or if one forms a substring of the
           other, else False

def _rm_name_match(s1, s2):
  """
  determine whether two sequence names from a repeatmasker alignment match.

  :return: True if they are the same string, or if one forms a substring of the
           other, else False
  """
  m_len = min(len(s1), len(s2))
  return s1[:m_len] == s2[:m_len]