1. Introducing dlsch_16qam_llr_SIC.
2. New writing files format in file_output.c
3. Some comments addded.

small bugfix in dlsch_demodulation
shunted out TM3-7 specific DCI generation in scheduler to enable basic operation. more work needed.

fix size checks of CCCH

it was at the wrong place
it was also wrong (< instead of <=)

See merge request !25

it was at the wrong place
it was also wrong (< instead of <=)

Improved common lib



See merge request !24

Conflicts:
	openair1/PHY/TOOLS/lte_phy_scope.c

+ 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].

Merge branch 'develop' of https://gitlab.eurecom.fr/oai/openairinterface5g into feature-34-test_framework

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.

when doing a merge request from oai-internal to oai.