Mutex and net debug, remove unwanted copy

applications/reconstruct/src/main.cpp

components/common/cpp/include/ftl/threads.hpp

components/control/cpp/src/slave.cpp

components/net/cpp/include/ftl/net/peer.hpp

components/net/cpp/include/ftl/net/universe.hpp

components/net/cpp/src/net_internal.hpp

components/net/cpp/src/peer.cpp

components/net/cpp/src/universe.cpp

components/rgbd-sources/include/ftl/rgbd/streamer.hpp

components/rgbd-sources/src/net.cpp

components/rgbd-sources/src/realsense_source.cpp

components/rgbd-sources/src/source.cpp

components/rgbd-sources/src/streamer.cpp