psiconv port to OS X

[Hubert Figuiere]

As has been done with libwv, I really need that psiconv get update with 
the latest config.guess and config.sub so that compilation work under 
MacOS X out of the box. Can I commit changes to CVS or shall Frodo do 
it ?

Latest version of those files are at
<http://subversions.gnu.org/cgi-bin/cvsweb/config/>


Hub