Updating top-level autoconf to 2.59

[Tom Tromey]

>>>>> "Maciej" == Maciej W Rozycki <macro@linux-mips.org> writes:

Maciej>  Sure -- I use a script like this for regenerating all the scripts:

autoreconf ought to do a lot of the work for you.
Though I don't recall whether it knows to read ACLOCAL_AMFLAGS, which
is necessary for proper operation...

>> And yes, there are some troublesome changes - like, if you don't adjust
>> your makefiles, you get warnings about ignoring datarootdir.

Maciej>  Indeed, though they are not fatal.  Perhaps Makefile.in files
Maciej> in the affected directories (Makefile.am are OK as
Maciej> sufficiently new automake will deal with that) could get
Maciej> updated beforehand?  It should not hurt at all.

I think automake 1.10 requires the new autoconf.  So, Makefile.ins
can't be updated first.

Tom