#28 MSN doesn't respond to ADD/RL

[Javier Kohen]

On receiving the following command "ADD 0 RL 31
xxx@hotmail.com alias" there's no response issued and
there's no way to handle it.

This seems to be a bug in the way incoming commands are
handled in MsnServer.run(), because according to the
public definition of the MSN protocol:
"Asynchronous ADDs and REMs to the FL, AL, and BL can
happen when the server allows an authenticated user to
make list changes from another environment, such as a
web site. In all of these cases, the server will send
the ADD or REM command with the TrID parameter equal to 0."
But these are being considered synchronous commands,
according to the nice comment that reads "See if this
is a synchronous command". I tried handling this
command in processAsyncCommand, obviously without success.