CPP11 — COMM_FAILURE and completion_status

Summary: Page 15-43 of 98-08-13:
As Bob Kukura pointed out, COMPLETED_MAYBE could well be wrong. In particular,
if the connection goes down in the middle of a series of fragments that
make up the reply, or in between reads by the client of parts of the
message from a socket, the client can actually conclude reliably
that the status should be COMPLETED_YES.

I would suggest to strike the last clause of this para. This would also
bring things in line with the additions made to the exception section in
the IDL chapter.

agree to remove the last sentence of 15.5.1.1