Update ocatve to the latest version

[Michael Dickens]

I've updated octave-devel in r97159.  For those using octave and wanting
the latest, please do a seflupdate and then see if the new octave-devel
works for you.  The octave-* ports may or not work with the Octave
3.6.2, but they should still be compatible with the octave (3.2) port. 
Someone (not me) will be working towards upgrading the octave-* ports to
be compatible with 3.6, and once those are well enough along then we'll
move octave-devel to octave.  For now, continue to use octave-devel. -
MLD