Starting to thread-ify SocketWrapper class.

Starting to thread-ify SocketWrapper class.

* Source/SocketWrapper.h: Defined connect: and _port, and internal method block
* Source/SocketWraper.m:
([SocketWrapper connect]): New method. Dispatches thread to _connect
([SocketWrapper _connect:]): Threaded method that does the actual connecting to the socket
([SocketWrapper initWithPort:]): Removing connection stuff and placing it in an explicit commit method
([SocketWrapper _postNotification:withObject:]): New helper method.
* Source/DebuggerConnection.m:
([DebuggerConnection socketAccepted]): New method
([DebuggerConnection initWithPort:]): Call [socket connect] and don't release it in the method any more