- Disassociate the socket context before closing so we don't get signalled with...

 - Disassociate the socket context before closing so we don't get signalled with a freed context (major cause of crashes)
 - Signal the connection directly from TCPSocketState
 - Remove some unused code
 - Queue completion requests on a separate list so we don't have to keep locking and unlocking while completing
 - Add better locking to tcpip (not the lib)
 - Remove some unused variables
 - Don't hold the cancel spin lock longer than necessary
 - Check that we successfully got the device description

svn path=/trunk/; revision=44250