* Allow empty FileHandle/SocketHandle etc instances
* Make ServerSocketHandle::listen depend on AddressingPolicy
* Replace all occurences of inet_ntoa with inet_ntop (thread safety)
* Fix handling of exceptions in ReadHelper/WriteHelper
* Fix Scheduler ERR/HUP semantics

Ipmlemented more compatible, standards conformant and flexible ClientSocketHandle::read() and readfrom() members

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

started ClientSocketHandle generic interface

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