to ulsim.c and removed them from ulschsim.c

Also changed the linked libraries for the "ulsim.c" as it was causing linker problems

Develop nr fixes 2019w23

See merge request oai/openairinterface5g!601

Integration nr 2019 w21

See merge request oai/openairinterface5g!598

this commit includes pucch format0 receiver and testbench for pucch format0 without ofdm. Also it has some fixes to pucch_nr.c

testing merge with develop-nr. removal of pthread_mutex_timedlock, we were using the wrong time argument (needed to be absolute).

Conflicts:
	openair1/SCHED_NR/sched_nr.h

Test x310

See merge request oai/openairinterface5g!585