WIP: added 2 more rx status bits: one activated upon CTRL byte reception and one upon detection of more bytes than the max frame size

added more bits to tx and rx bytes counters so as to be compatible with the PTS that needs to send 1024 bytes.

removed sw folder; changed general-cores branch (tom-proposed-master-feb28; unused IOBs set to floating; clean up counters

added all the submodules needed in ip_cores so that they are not taken from ip_cores/wr-node-core/hdl/ip-cores

direct access to the host is now given through the fmc0_host port of MT.

- cleaned up simulation