[ns] overloading TcpAgent::opencwnd()

[Yee-Ting Li]

i'm trying to write a class that inherits Sack1, in particular, i wish to 
overload some methods in TcpAgent. I have no problems overloading slowdown(), 
but when i try the same with opencwnd() it defaults back to the method in the 
base class.

how can i overload opencwnd() from my new class???

Yee.