1. TM4 works on dlsim_tm4.c with full HARQ support for both PIA and SIC.

2. Fixing the arguments in the dump_dlsch2.

EPA channel model. -gV, -gW, -gX.

Adding the updated CSI option for retransmission of TB1 in TM4. Pass -U from the command line to enable.

The independent retransmission of TB1 will take data from the last PUSCH
report, when both TB were active and keep it for all the retransmission
rounds.
Now the TPMI for the retransmissions of TB1 is passed from the command
line with -K(tpmi): -K0 for Alamouti, -K5 for PUSCH column1 , etc.

Modifying some printouts into the file.

Intermediate commit. Adding HARQ support for SIC receiver. Changes in dci_tools.c to map TB to CW in a proper way.
Enable different options for TB1 retransmissions. Needs further improvements.

Counting for the number of 2CWs or 1CW retransmissions.
Adding corresponding changes to the phy_scope.

Conflicts:
	openair1/PHY/INIT/lte_init.c
	openair1/PHY/LTE_ESTIMATION/lte_ue_measurements.c
	openair1/PHY/LTE_TRANSPORT/dci_tools.c
	openair1/PHY/LTE_TRANSPORT/dlsch_demodulation.c
	openair1/PHY/LTE_TRANSPORT/dlsch_modulation.c
	openair1/PHY/LTE_TRANSPORT/proto.h
	openair1/PHY/MODULATION/slot_fep.c
	openair1/PHY/TOOLS/lte_phy_scope.c
	openair1/SCHED/phy_procedures_lte_eNb.c
	openair1/SIMULATION/LTE_PHY/dlsim.c

The old value was 6, it should be 8 because those fields are
casted to 'struct DCI0_5MHz_FDD' and the like and those have
a size multiple of 32 bits, that is 4 or 8 bytes as of today.

(MAX_DCI_SIZE_BITS is 45, all the shifts, muls and adds lead
to a value of 8 after this commit and 6 before.)

The problem manifested itself with a 20MHz eNB. Push the traffic,
after a while the DL harq process 0 is not used anymore.
This is because DLSCH_DCI is directly followed by nb_rb in
the structure UE_TEMPLATE and setting a value for harq process 7
did overwrite nb_rb[0], putting much too big values in there,
leading to the scheduler to always refuse to reschedule because
the required RBs are impossibly huge (I saw values of 32744, 16384,
and others).