Clean up all file-defines and remove all tabs

PPI: Document Module::v_init() member
Scheduler: Rename EventEvent to EventHook
Documentation updates

Scheduler: EventEvent hook
Scheduler: Simple task priorities

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

Fix dependency generation for built programs
Fix depenfencies for auto-generated sources

Add 'fixlinks' target and add 'fixlinks' to the auto-build
PPI: exchange registerEvent arguments
PPI: Add connector 'operator()' aliases
PPI: More detailed 'route' and 'registerEvent' documentation

Fix TAGFILE dependencies
Fix some URL references
PPI: Add additional 'route' documentation
Globally disable SUBGROUPING in Doxygile.global

Make all include path's relative
Add 'senf/Packets.hh', 'senf/PPI.hh' and 'senf/Socket.hh'

Socket/Protocols/Inet: Remove not implemented  async resolv constructors (in favor of a later non-member implementation)
Socket/Protocols/Inet: More detailed exceptions thrown by INet4Address / INet6Address

Examples/RateStuffer: Use CloneSource module
Exmaples/RateStuffer: Implement using a RateStuffer subnet
PPI: Implement CloneSource
PPI: Add throttle()/unthrottle() to passive debug modules
PPI: Implement DiscardSink
PPI: Implement ThrottleBarrier
PPI: Implement missing unit tests
PPI: Complete the documentation
Scheduler: Improve ClockService performance and remove a race condition
Scheduler: Clean up Scheduler::process()
Utils: Make singleton::instance() protected by default and fix implementation
Remove private members from doxygen documentation

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

PPI: More documentation
PPI: Implement IdleEvent and ActiveFeeder
PPI: add Module::running() member
Scheduler: Remove MinTimeout (not needed with ClockService working)

Scheduler: Implement ClockService clockSkew detection / fixup

Examples/RateStuffer: documentation

PPI: Implement IntervalTimer event
Scheduler: Change timeout() argyument to absolute time represented as ClockService::clock_type
Scheduler: Implement timer event cancelation
PPI: Implement RateStuffer in ppitest

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

* Place all modules in the senf::ppi::module namespace
* Place all connectors in the senf::ppi::connector namespace
* Name input modles 'Reader', output modules 'Writer'
Added specification for SocketReader / SocketWriter and PassiveQueue
Removed three-argument connect() form

Layout update