TS-32: minimum FIX to let ICP work

Fixed an error on access to class member that was not initialized and
restored former implementation based on a change in TS-320.

And commented out the forced termination code in
UDPReadContinuation::readPollEvent().
Please tell me if you know what seems to be the problem in this
implementation.

Signed-off-by: Zhao Yongming <ming.zym@gmail.com>
TS-32: FIX to perform multicast ICP communication

Signed-off-by: Zhao Yongming <ming.zym@gmail.com>
TS-32: temp fix the overrun problem in PollDescriptor::alloc()

may need better solution on pollfd.

Signed-off-by: Zhao Yongming <ming.zym@gmail.com>
Add TS-32.