[TCPIP, IP]

[TCPIP, IP]
 - Completely rewrite (again) the locking code and use references to ensure that the connection doesn't get freed while completing requests (the most frequent cause of crashes)
 - Remove DrainSignals and complete requests inside HandleSignalledConnection instead of doing them in a separate thread (increases speed a lot)
[OSKITTCP]
 - Don't clear the socket context in OskitTCPClose because we would end up in HandleSignalledConnection without a connection (which we don't support anymore after eliminating DrainSignals)
 - Change the check performed to see if a socket is dying so we support connection dying after calling OskitTCPClose
[AFD]
 - Remove leftover ASSERTs which fail after the changes to tcpip (they were wrong in the first place because we call into tcpip at DISPATCH_LEVEL sometimes)

svn path=/branches/aicom-network-branch/; revision=44839