the previous patch only introduced a thread-safe queue between
PHY workers (writers) and PCAP writer thread (consumer).
However, it is also required to protect the ctor (and close()) to
prevent corrupted PCAP files.
The patch also correctly handles the case where the PCAP couldn't
be openend for writing and doesn't start the thread.
* offload PCAP writing to background thread
* use blocking_queue between writer and clients to make it thread-safe
* add basic test case
this fixes point 1-3 of #2161
* Clang-formated UE, eNB and lib.
* Fixed compiling errors from clang-format.
* Fix linking issues introduced by clang-format
* Fix poor formating in initializing arrays of arrays.
* Fix mistake in conflict resolution on rm_turbo.c
* Re-apply clang format to gtpc_ies.h