Notwithstanding any conflicting provision of law or of the charter or bylaws of any corporation affected by this section, in the case of any nonprofit cemetery corporation chartered prior to the year 1900 whose charter has expired prior to May 18, 1955, a quorum at any? meeting of stockholders called for the purpose of electing directors,? or of amending the charter of such corporation, or both, shall consist of the holders of ten percent (10%) or more of the outstanding shares? of the capital stock of such corporation having voting powers, present in person or represented by proxy; and a meeting of the stockholders of such corporation for such purpose or purposes may be called by any two stockholders after 10 days’ notice by registered mail to all stockholders of record at their last known addresses as shown by the stock book of such corporation. The concurrence of a majority of the shares represented at such meeting shall be sufficient to authorize an amendment or amendments to the charter of such corporation in accordance with the provisions of N.C. Gen. Stat. § 55-31 (1955, c. 1084.)