fix formatting and adding nthreads option

psrdada_cpp/effelsberg/edd/EDDPolnMerge.hpp

psrdada_cpp/effelsberg/edd/EDDPolnMerge10to8.hpp

psrdada_cpp/effelsberg/edd/EDDRoach_merge.hpp

psrdada_cpp/effelsberg/edd/EDDRoach_merge_leap.hpp

psrdada_cpp/effelsberg/edd/dada_disk_sink_leap.hpp

psrdada_cpp/effelsberg/edd/src/EDDPolnMerge.cpp

psrdada_cpp/effelsberg/edd/src/EDDPolnMerge10to8.cpp

psrdada_cpp/effelsberg/edd/src/EDDPolnMerge10to8_cli.cpp

psrdada_cpp/effelsberg/edd/src/EDDPolnMerge_cli.cpp

psrdada_cpp/effelsberg/edd/src/EDDRoach_cli.cpp

psrdada_cpp/effelsberg/edd/src/EDDRoach_merge.cpp

psrdada_cpp/effelsberg/edd/src/EDDRoach_merge_cli.cpp

psrdada_cpp/effelsberg/edd/src/EDDRoach_merge_leap.cpp

psrdada_cpp/effelsberg/edd/src/EDDRoach_merge_leap_cli.cpp

psrdada_cpp/effelsberg/edd/src/dada_disk_sink_leap.cpp

psrdada_cpp/effelsberg/edd/src/dbdisk_leap.cpp