[Ticket #13686] Octave Portfile upgrade and maintainership

[Alakazam]

Hello,

seeing that there has been no progress on the octave port for the last  
couple of months, even though many users have encountered problems  
with it, I think the Portfile could be advantageously upgraded with  
the one proposed on Ticket #13686 (http://trac.macosforge.org/projects/macports/ticket/13686 
).

I am also ready to volunteer as maintainer for the octave port, if  
that may be useful and improve the frequency of updates and fixes.

Thanks in advance,
-- 
Olivier Le Floch
(AKA Alakazam <alakazam at melix.net>)