Console: Fix names which have been removed in the last commit

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

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