Utils/Console: Fix rename Target::clear() to Target::flush() to fix name clash (Target / StringTarget)

Clean up all file-defines and remove all tabs

Utils/Logger: More consistently support optional stream spec

Console: ConfigFile support

Console: Implement (and document) Server::stop()
Console: Implement working readline C-d and minnimal C-c support
Utils/Logger: Make Stream optional in routing commands

Utils/Logger: Renoame all 'SENF_LOG_DEF_*' macros to 'SENF_LOG_DEFINE_*'
Utils/Logger: Add documentation on default compile-time limit

Changed all exceptions to inherit from senf::Exception
Replaced all throwErrno() calls with throw SystemException()

Scheduler: Elaborate more on boost::bind usage
Utils: Start senf::Daemon base class
Utils/Logger: Make ConsoleTarget a singleton
Utils/Logger: Introduce fallback routing

Utils/Logger: Add Alias documentation
Scheduler: Add scheduler based logger time source

Utils/Logger: FileTarget implementation

Utils/Logger: Fix routing API ambiguities

Utils/Logger: Completed the target routing and querying API

Utils/Logger: Implement message routing -> logging library is working now
Move 'nil' class into Utils/mpl.hh

Utils/Logger: Documentation
Utils/Logger: Better SENF_LOG_CLASS_AREA integration
Utils/Logger: Fix compile-time config bug for larger configurations

Utils/Logger: New SENF_LOG_CONF syntax supporting not-yet-declared areas and streams
Utils/Logger: Target baseclass

PPI: Add documentation
Utils: Make Logger macros define empty stub types

PPI: Fix PassivePackeSink: provide front() instead of back() members
PPI: Provide specializations for void-argument callbacks in Events and Route
PPI: Add notifyThrottle/notifyUnthrottle to EventDescriptor
PPI: Re-implement routing classes using a traits-based implementation
PPI: Add Route unit testing (mainly testing throttling)

PPI: Implement throttling
PPI: Implement ModuleManager and ppi::init
PPI: Implement ThresholdQueuing
PPI: Hugely extended routing classes

Socket/Protocols/INet: Slightly optimized generic INet6Address algorithms
Utils: Add ios_all_saver to hexdump()
senfscons: Add automatic image-copy to Doxygen builder (fixes weird doxygen copy problem)
Socket/Protocols/Inet: Add ConnectedUDPSocketHandle