Scheduler: Implement binding helper

Scheduler: Fix documentation (main page)
Socket/Protocols: return ClockService::clock_type from timestamp()
Add 'Scheduler' library dependency to every user of the 'Socket' library

Utils: Add WrapException template
Utils/Daemon: BUGFIX: Only remove pidfile if we have created one ourselves

Console: Documentation

INet6Address(in6_addr in6a)

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)

   - renamed "description()" member to "errorString()", 
   - renamed "where" attribute to "description", 
   - changed "what()" ouptut.

Socket/Protocols/INet: Fix INet6SocketAddress base classes

Packets: change *_RO field helper macros to add a private r/w accessor
senfscons: Introduce TEST_EXTRA_LIBS variable and move BOOSTFSLIB there
Socket/Protocols/INet: Make INet[46]MulticastSocketProtocol inherit MulticastSocketprotocol
Change SENF_NO_DEBUG to SENF_DEBUG

- some documentation updates, once again

Packets/DefaultBundle/extra_tests: use unittest include from utils /grrr
Socket/Protocols/AddressExceptions: fixes
Socket: fixed documentation

Socket/Protocols: Move incorrectly placed members from AddressableBSDSocketProtocol to BSDSocketProtocol
Socket/Protocols: Add missing DatagramSocketProtocol to some protocols
Socket/Protocols: Extend documentation of addressing classes

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