commit of tb_lofar2_unb2b_sdp_station_xsub_one + bug fixes found after

...on/revisions/lofar2_unb2b_sdp_station_xsub_one/hdllib.cfg

...dp_station_xsub_one/lofar2_unb2b_sdp_station_xsub_one.vhd

...station_xsub_one/tb_lofar2_unb2b_sdp_station_xsub_one.vhd

...2_unb2b_sdp_station/src/vhdl/lofar2_unb2b_sdp_station.vhd

...b2b_sdp_station/src/vhdl/lofar2_unb2b_sdp_station_pkg.vhd

...b2b_sdp_station/src/vhdl/mmm_lofar2_unb2b_sdp_station.vhd

...dp_station/src/vhdl/qsys_lofar2_unb2b_sdp_station_pkg.vhd

...ons/lofar2/libraries/sdp/src/vhdl/node_sdp_correlator.vhd

applications/lofar2/libraries/sdp/src/vhdl/sdp_pkg.vhd

libraries/base/dp/src/vhdl/dp_block_to_mm.vhd

libraries/base/dp/src/vhdl/mms_dp_gain_serial_arr.vhd

libraries/dsp/st/src/vhdl/st_xsq_dp_to_mm.vhd