- lock with mutexes
- don't start ENB_APP task, but Agent directly and wait in case of
  reconfiguration

- {restart,stop}_L1L2() in lte-softmodem.c
- add function start_phy_rrc() in enb_app.{c,h}, accessible from outside
- will be used to restart PHY and RRC when lte-softmodem is restarted

use only one FlexRAN wait function

Conflicts:
	targets/DOCS/oai_L1_L2_procedures.pdf

making oaisim_nos1 compile

basically the T_xx variables are int, not uint

phy_init_lte_ue_signal was renamed init_lte_ue_signal in openair1/PHY/INIT/defs.h
maybe it's the opposite that should have been done?

Functions used in one file and defined in another may have been
declared in the wrong header file.

modifications for TDD and IF4p5 (in particular TDD). Both in RRU and RAU components. Monolithic is unchanged.

added LUT for finer-grain ULSCH power measurement compensation based on TBS. Still seems too high, to be checked some more.

see commit 622b919b

removed "short_offset" code from normal_prefix_mod. removed static declaration in PHY_ofdm_mod which was a cause for problems when parallelizing FFTs for FEP TX.

put 50 PRB back in default enb configuration. added handling of UE release in L1/L2. detection of stale ULSCH configuration

removal of LOG_I put for debugging.

internal use, no documentation, no support.

switching some LOG_I to LOG_D, fixes for RRU IF4p5. It was broken after changes in configuration procedures. Some configuration file changes.