Utils/Logger: Enhance non-formatted time format to show seconds since first log message

Scheduler: Optimize watchdog implementation
Socket: Change read-into-container implementation to skip unnecessary available() call
Add 'profile=1' compile option
Exclude 'boost' and 'std' symbols from documentation

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

Console: Restructure ConfigFile::parse and add chroot support
Console: Some ConfigFile documentation

Utils: Replace TypeInfo demangle implementation from binutils with cxxabi implementation
Console: Implement Executor chroot and security policy support
Console: Refactor Node::traverse() implementaiton to move code out of template function

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

Make wording on SENF_DEBUG more clear (hopefully ...)