backout my previous commit (KAME PR 296).  foo != TUNNEL will forbid "ANY" SA from being used for tnunel mode.
backout my previous commit (KAME PR 296).  foo != TUNNEL will
forbid "ANY" SA from being used for tnunel mode.

Reported by:	Chris Cason <casonc@netplex.aussie.org>

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