- Replace shared_variable members in log_channel class in favor of atomics.
- Remove the small string optimization in srslog now that we dont allocate anymore.
- Trim some critical sections in srslog.
- Import the srslog project into srslte.
- Ported srsue app to use the new logging framework.
- Implemented a wrapper that dispatches log entries to srslog.
- Renamed an existing log test to be more specific to avoid name clashes.