Merge branch 'master' into regression_eth_tester_rx_fix

applications/lofar1/RSP/readme_lofar1.txt

...ions/lofar2/doc/prestudy/station2_sdp_firmware_design.txt

...ns/lofar2/doc/prestudy/station2_sdp_firmware_planning.txt

...ons/lofar2/doc/prestudy/station2_sdp_transient_buffer.txt

applications/lofar2/doc/prestudy/station2_to_do_erko.txt

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

...s/lofar2/libraries/sdp/src/vhdl/sdp_beamformer_output.vhd

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

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

applications/lofar2/model/readme_lofar2_model.txt

doc/erko_firmware_dag.txt

doc/erko_firmware_overview.txt

doc/erko_hdl_design_article.txt

doc/erko_howto_tools.txt

doc/erko_teaser_talks.txt

doc/sdp_useful_commands_erko.txt

libraries/base/axi4/src/vhdl/axi4_lite_pkg.vhd

libraries/base/axi4/src/vhdl/axi4_stream_pkg.vhd

libraries/base/diag/tb/vhdl/tb_diag_pkg.vhd

libraries/base/dp/hdllib.cfg