o Update (c) and author infos;
o Update (c) and author infos;

o label sections for re-use in user manual;

o group <abstract>;

o add documentation for 3 missing socket types: tcp, tcp6 and cunix;

o rename "HowItWorks" into "PRINCIPLES OF OPERATION".

o add makeann and extractaudio into FILES.

o Clean up LICENSE section.

dsanders11/rtpproxy,sippy/rtpproxy,dsanders11/rtpproxy,sippy/rtpproxy,dsanders11/rtpproxy,sippy/rtpproxy