Updating top-level autoconf to 2.59

[Maciej W. Rozycki]

On Fri, 9 Feb 2007, Daniel Jacobowitz wrote:

> >  Could using autoconf 2.61 have helped?
> 
> Yes, but I am unwilling to try migrating more than one thing at a time
> right now.  This patch puts all of gcc and src, at long last, on the
> same version of autoconf.  Moving the whole tree to 2.61 is a separate
> project.

 I see, though frankly I wouldn't consider switching from 2.59 to 2.61 too 
much of a project.  And certainly much less than doing the 2.13 to 2.59 
conversion at the top level.  Of course in 2.61 there may be different 
bugs than in 2.59, but I gather the new version is not meant to imply any 
kind of revolution.  Even if there were some subtle problems somewhere, 
they should get sorted out as things go by stage 3.

 Or is it because of the new structure of install directories?

  Maciej