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

- general clean-up
- updated and renamed wbgen2 fileset.xml

- now providing to MT the current number of words rather than of bytes (rx_words_indx rather than rx_byte_indx)
- updated simulations