Using raxml generic_ parameter. User can enter anything in whitelist chars, except our validation for generic parameter makes sure each arg is entered separately with a hyphen or double hyphen and we don't allow -w and -T. This test succeeds with generic_ outgroup arguments appearing at end of commandline. Job is OK, command line is 'raxmlHPC-PTHREADS -f d -n result -s infile.txt -c 25 -p 12345 -m GTRCAT -o Cirrospilus_nr_vittatus_AUS_D3866_ABCH_F,Zagrammosoma_americanum_NM_D3671_ABCGH_F'