Utils/Daemon: Add 'main()' documentatory example

Utils: Rename Daemon::fail() to Daemon::exit()

Replace all 'throw SystemException(...)' commands with 'throwErrno(...)'
Add additional links to documentation header

Rename IpV[46]* -> IPv[46]*

Rename IpV[46]* -> IPv[46]*

- terminate on socket handle now calls v_terminate() -> protocol()->teminate()
- unix domain sockets now remove there filesystem representaion on close or terminate

Small SCons V0.96 compatibility fix

todo: add tests & documentation

Utils/Daemon: Last implementation fixes
Fix installation of some missing files

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)

- some tests commented out
- bind in constructor enabled by given address
- and more :)

Scheduler: Daemon class: Implement default argument parsing

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

Scheduler: Daemon class: Fix DaemonWatcher to not drop info from stdout/stderr when the child terminates
Scheduler: Daemon class: Replace all ::exit() calls in the daemon watcher with ::_exit()

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