Integration 2019 w18

See merge request !582

Merge remote-tracking branch 'origin/Develop-nr-threequarter_fs-80mhz-x310' into integration_2019_w18

1. Fix code generated from ASN.1 of F1AP v15.4.0 failed to be compiled
2. Fix incorrect UPER encoding for empty extensible SEQUENCE in 38.331
3. Fix the problem that duplicate type names exist in OPEN TYPE

The changes made in this branch is to enable -E(threequarter sampling rate) option for mu=1 and 217PRB(ie; 80 MHz) to run on USRP x310.

Final --phy_simulators warning removals for this branch, and former polar coding function corrections

--phy_simulators warning removals, except for nr_dlsim. Polar coding old implementation's approximation and a priori information options needs to be corrected or removed

Conflicts:
	openair1/SIMULATION/NR_PHY/dlsim.c

removing printfs

Integration develop nr 2019w15

See merge request !565