Fix python imports in SConscripts

Remove and/or simplify most remaining SENFSCons stuff

Socket/Protocols: Implement INet4Network input streaming
Socket/Protocols/INet: Add reuseaddr to connected UDPClientSocketHandle constructor
Utils/Console: Add emptyReplies flag to UDPServer

PPI: Allow IOEvents to be constructed with an in-valid() handle
Socket/Protocols/INet: Implement INet6Address::from_mac()
Socket/Protocols/Raw: Implement LLSocketAddress output streaming

added more tests to increase test coverage

Utils/Logger: Implement dynmaic targets

Clean up all file-defines and remove all tabs

Examples/MultiMCLoop: Add example and test for multiple local multicast socket forwarding
PPI: Emit throttle/unthrottle messages on connector connect

Fix lot's of inline implementation ordering errors (make sure, all inline functions are implemented before first use)

Socket/Protocols/INet: Extend INet6SocketAddress syntax to support more flexible syntax variantes (embedded v4 address, hostname + zoneid ...)
Socket/Protocols/INet: Add (linux specific) support for v6 mapped v4 multicast addresses

Utils/Daemon: Ignore SIGPIPE signals by default
Console: Refactor console server to prepare for readline integration

Console: Add Console.hh
Console: Add testServer as example to the documentation
Console: Fix overload resolution when adding manually parsed commands
Console: Remove Server::instance() to be more flexible with future extensions

Scheduler: Fix documentation (main page)
Socket/Protocols: return ClockService::clock_type from timestamp()
Add 'Scheduler' library dependency to every user of the 'Socket' library

Utils: Add WrapException template
Utils/Daemon: BUGFIX: Only remove pidfile if we have created one ourselves