Revert to rev. 1.161 - switch back to optimized TCP options ordering.

A lot of testing has shown that the problem people were seeing was due
to invalid padding after the end of option list option, which was corrected
in tcp_output.c rev. 1.146.

Thanks to: anders@, s3raphi, Matt Reimer
Thanks to: Doug Hardie and Randy Rose, John Mayer, Susan Guzzardi
Special thanks to: dwhite@ and BitGravity
Discussed with: silby
MFC after: 1 day