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

Clean up all file-defines and remove all tabs

Packets/DefaultBundle: Fix EthernetPacketType::finalize() (don't throw when no next packet)
Scheduler/Console: Add some missing #undef's

senfscons: Speed up non-documentation builds (doesn't help much)
Socket/Protocols: Add documentation for sockaddr_cast

- some documentation updates, once again

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

Socket: Removed (now) empty IPv4Protocol/IPv6Protocol facets

Implemented SENF_ASSERT and replaced all occurences of BOOST_ASSERT with SENF_ASSERT
Packets: Fixed compile-error (missing namespace prefix) in PacketParser.cci

Packets: Renamed PacketParserMixin::registry_key_t to key_t
Packets: Add PacketParserMixin::lookup helper

Packets/DefaultBundle: BUGFIX: Remove invalid EthernetPacket::type_length field overwrite in finalize()

Rename IpV[46]* -> IPv[46]*