Extended the Sniffer example to optionally use the Scheduler
Some additional small documentation fixes

Unified emacs Local Variables

Add HTML tidy postprocessing and error filtering to SENFScons doxygen method
Add doclib/filter.pl INPUT_FILTER to fix example code indentation in the documentation
Add a glossary to the Socket documentation
Furthher Socket library docs (Protocol classes)

Renaned directory satscons to senfscons

implemented rudimentary PacketSocketHandle testing

added listen to ConnectedCommunicationPolicy
added primitive doxygen documentation
cleaned up naming of some files
fixed INetProtocol.cc (missing const modifiers)
removed SocketProtcolHelper in favor of directly inheriting SocketProtocol virtually
moved implementation of TCPv4SocketProtocol virtual methods into the base classes
added rudimentary testing of the TCPv4SocketHandle protocol interface
finalized PacketSocketHandle