Draft: Xdai add4h
Add to D0-> K pi pi pi channel to doublecharm_samesign_sprucing_line and doublecharm_oppositesign_sprucing_line, The D0 selection is same as that used in Moore/Hlt/Hlt2Conf/python/Hlt2Conf/lines/charm/d0_to_hhhh.py
Add to D0-> K pi pi pi channel to doublecharm_samesign_sprucing_line and doublecharm_oppositesign_sprucing_line, The D0 selection is same as that used in Moore/Hlt/Hlt2Conf/python/Hlt2Conf/lines/charm/d0_to_hhhh.py