Changes after the merge with L1_renaming in order to work at least in FDD mode. We need to handle the RU_mask_tx for TDD mode.

* put mutex lock around instance_prach
* destroy attributes

* init_td_thread()/init_te_thread() are only initialized depending on condition
  get_nprocs() > 2 && codingw
* apply the same the same for the functions kill_td_thread()/kill_te_thread()

Conflicts:
	common/utils/T/T_messages.txt
	openair1/SCHED/ru_procedures.c
	targets/RT/USER/lte-enb.c

log.c simplification, fix usefull functionality which never worked, move all log code from openair2 to common

Remove compilation warnings, also fix telnet server compilation failure and NB-IoT shared lib compilation failure introduced when reviewing L1 sources  organization