voipstream: updated for libav 11

fingerprints with mp3 files are differs, not updated
smoketest: CTRL-C fix
Features: Added new features.

Physical environment, physical environment examples, and IEEE 802.15.4a.
Features: Followed renames with physical layer features.
Test: Added cpu time limit parameter to smoketest.
features: Router module fixes for disabled features
.oppfeatures fixes
IPv4: Fixed memory leaks detected by memcheck.
Test: Followed recent file move.
Radio: Changed to switch mode immediately during startup/shudown/crash ignoring switching times.
Radio: Ignore aborting ongoing transmission when switching radio mode.
Radio: Ignore incoming reception messages when down.
Test: Added missing sim-time-limit.
udp: SockDesc: memory leak: destructor was missed
todo
tcp: bugfix - cloneListeningConnection / TCPSACKRexmitQueue
dhcp: Fixed memory leaks detected by memcheck.
httptools: memory leak fixes
sctp: memory leak fixes
environment/material: memory leak fixes