Socket: Fix NetDeviceController.test.cc (use 'lo' interface instead of 'wlan0'
Socket/Protocols/MPEGDVBbundle: Fix TransportPacket.test.cc (add 0 to constant to fix link error)

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

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

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

Unified emacs Local Variables

Renaned directory satscons to senfscons

Implemented EAGAIN / EWOULDBLOCK and EINTR handling
Made the generic connect implementation always block
Implemented SocketHandle::state() infrastructure

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