* 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

Fix search layout to work acceptably in all browsers

Unified emacs Local Variables

Updated documentation templates to include cross-reference
Fixed documentation build (especially regarding cleanup)
Cleaned up BUG, FIXME, TODO and IDEA items
More SocketLibrary documentation

Renaned directory satscons to senfscons

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