+ small bug fix in dlsim related to sic cw.

2. Fixing confusion between dl_ch_rho2_ext and dl_ch_rho_ext[harq_pid][round].

1. in dlsim.c: now we check for the receiver type and, if SIC,  proceed through encoding, modulation, LLR compuattion and decoding
of the decoded TB0.
2. Implementing routines for vector-vector multiplication and vector-vector subtraction
3. Adding some printouts for debuging purposes.
4. New functions: modulation_SIC, dlsch_qpsk_llr_SIC
5. In phy_scope.c: changing llr plotting: now for the length of coded_bits_per_cw.

Conflicts:
	openair1/SIMULATION/LTE_PHY/dlsim.c

Enhancement 64 phy test

this branch (re)-introduces functionality that allows to run the eNB as a signal generator and the UE as a vector signal analyzer (old OPENAIR2=0). 
Tests mostly pass (as good as before).

See merge request !18

Conflicts:
	openair1/SCHED/phy_procedures_lte_ue.c
	targets/SIMU/USER/oaisim_functions.c

Merge branch 'enhancement-64-phy_test' of https://gitlab.eurecom.fr/oai/openairinterface5g into enhancement-64-phy_test

Hotfix 81 oaisim 2

this branch fixes a few issues mainly with the oaisim testcases 
 - improved gain control for oaisim
 - updated testcase list options for oaisim
 - XFORMS now command line options for oaisim and unitary sims
 - build script improvements for sudo; HW=None and XFORMS=1 now default
 - fixed SNR calculation in abstraction mode

See merge request !15

Conflicts:
	openair1/SCHED/phy_procedures_lte_ue.c
	targets/RT/USER/lte-softmodem.c

Still need to caliibrate shifts -J.

Conflicts:
	cmake_targets/autotests/test_case_list.xml

Conflicts:
	openair1/PHY/TOOLS/lte_phy_scope.c
	openair1/SIMULATION/LTE_PHY/dlsim.c

Fixing new modulation tables for TM4 and TM6. Now all modulation orders and combinations work and the maginutes are at  appropriate level.