Move mainline to autoconf 2.59

[Alexandre Oliva]

On Mar  9, 2004, Kelley Cook <kelley.cook@sbcglobal.net> wrote:

> I could upload the regenerated files, if no-one objects.  I had been
> running with AC 2.59 generated files in my local tree for a few weeks
> now.

After the several supporting e-mails, I thought I'd post an `official'
go for it :-)

-- 
Alexandre Oliva             http://www.ic.unicamp.br/~oliva/
Red Hat Compiler Engineer   aoliva@{redhat.com, gcc.gnu.org}
Free Software Evangelist  oliva@{lsd.ic.unicamp.br, gnu.org}