Remove TCP options ordering assumptions in tcp_addoptions().  Ordering was changed in rev. 1.161 of tcp_var.h.  All option now test for sufficient space in TCP header before getting added.
Remove TCP options ordering assumptions in tcp_addoptions().  Ordering
was changed in rev. 1.161 of tcp_var.h.  All option now test for sufficient
space in TCP header before getting added.

Reported by:	Mark Atkinson <atkin901-at-yahoo.com>
Tested by:	Mark Atkinson <atkin901-at-yahoo.com>
MFC after:	1 week

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase