some code in ru_thread_control, still need to remove redundant code in ru_thread, add the state to ru struct, all ru_thread changes still need to be done

Summary of changes:

- minor changes in RA code (functionality not changed, only notation)
- automatic indentation of some files (with indent -kr)
- bugfixes for TDD in RRU (IF4p5) and timing statistics of fronthaul and
  compression

changing of notation for Random-Access procedure to match documentation. Function remains the same. Indentation (-kr) run on all files in LAYER2/MAC

Summary of changes:
- fix a bug with Timing Advance.
  This should improve the stability of the connection
  (for now, only the scenario with one connected UE works).
- use RRC Release 14.3
- add some T tracers, minor fixes for T

Conflicts:
	common/utils/T/.gitignore
	common/utils/T/tracer/Makefile

Sometimes when the user does ctrl+c to quit, it may not quit
if nothing comes on the socket. Closing the socket in the
signal handler fixes this.

Do not link the X stuff for tracers not needing it.

Later on, use this file with gtkwave.
To be used to check realtime behaviour of the system.