Scheduler: Documentation update

Scheduler: Move remaining non-public implementation classes into 'detail' namespace
Adjust rest of SENF accordingly

Scheduler: Clean up FIFORunner::TaskInfo interface
Update rest of senf to use the new API

Scheduler: Move task 'name' argument to constructor
Scheduler: Remove obsolete 'enabled_' members
Scheduler: Remove obsolete SchedulerTimer class

Scheduler: Fix FIFORunner exception safety
Scheduler: Implement new signal event API
Migrate SENF to use new signal API

Scheduler: Watchdog configuration support

Scheduler: Add automatic periodic resync to ClockService::abstime() and ClockService::clock()
Scheduler: Add task nameing
Scheduler: BUGFIX: Add missing task-dequeue in FdDispatcher::add()
Scheduler: Add empty() member to all dispatchers
Scheduler: Add eventTime() support to FdManager
Scheduler: Add support for non-pollable file descriptor detection to FdManager and FdDispatcher
Scheduler: Add FIFORunner task watchdog
Scheduler: Add debugging backtrace to FIFORunner
Scheduler: Change senf::Scheduler implementation to use the new dispatcher infrastructure
Scheduler: BUGFIX: Fix access to (possibly) destroyed object in TimerEvent::run()
Utils: Add senf::signalName() helper
Utils/Daemon: Use senf::signalName() in debug messages
Utils/Logger: Fix logger to correctly format the timestamp (the deadlock should be fixed now)
Update scheduler callback signatures to the new API throughout the project
Update documentation

Console: Pass ParseCommandInfo instead of ArgumentsRange to the callbacks
Console: Add named aliases for operator overloads ('[]' and '()')
Utils: Document, where impl/demangle.h comes from
Updated the 'Setting up a new project using SENF' documentation

- some documentation updates, once again

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

Small SCons V0.96 compatibility fix

PPI: Fix cloneSource unit-test packet construction
Scheduler: BUGFIX: uninitialized loop variable
Scheduler: BUGFIX: delay deletions in fdTable_ (can't change map while iterating over it)
Add global 'valgrind' target
Add 'valgrind.sup' suppressions file to suppress custom benign valgrind errors
Fix all unit-tests to run correcly under valgrind (mostly timing adjustments)

Scheduler: Hack suppoer for ordinary files into the scheduler (epoll does *not* support ordinary files ...)
Scheduler: Daemon class: Add consoleLog (log file) support

Scheduler: Add debug log message, fix signal handlin bug
Scheduler: Remove all registered handlers/callbacks/descriptors at end of unit test
Utils/Logger: Undef SENF_LOG_CONF if defined in main.test.hh
Scheduler: Moved Daemon class from Utils here. Can't be in Utils since it depends on the Scheduler :-(
Scheduler: Daemon class: Implemented correkt fork() and simple log-passing behaviour

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

Scheduler: Simplify callback parameter (remove mostly ignored callback handle parameter)
Scheduler: Add timeoutEarly and timeoutAdjust parameters

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

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: 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

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

Packets: Silence PacketRegistry warnings with final=1
Utils: Remove MicroTime
Scheduler: Sart implementing more reliable timing mechanism