Add in AC_PREREQ to all configure.{in,ac}

[Kelley Cook]

This short patch:

1) Makes sure that AC_PREREQ(2.13) is set on all the configure.in's that 
are still using the old autoconf tools.  Note that adding this line has 
no effect on the generated configure or config.h.in.

2) Makes sure that AC_PREREQ(2.57) is set on all the configure.ac's that 
have been updated to the new autoconf tools.  Again, note that adding 
this line has no effect on the generated configure or config.h.in.

3) Renames fastjar's and libiberty's configure.in to configure.ac.

4) Regenerates the few files that are actually backlevel to their stated 
requirements.  This turned out to be three files: libiberty's and 
fastjar's config.h.in and libU77's configure.in

I did regenerate all of the rest of the directories "configure"s.  Some 
of them had a few minor differences that appear to be due to differences 
in the various recent "unofficial" patches to the stock GNU autoconf 
2.13 that different distros may have included.  None of the changes 
looked significant, so I decided to leave the current CVS files as they 
currently are.

5) Finally it updates install.texi to reflect current reality regarding 
automake and autoconf versions.

I ended up not actually touching any of the generated automake files 
since the java directories are the only one using automake 1.4 and they 
require a java-specific version.  Supposedly the java and libstdc++ 
directories will be moving to a version of automake 1.8.x in the near 
future and what is currently there is working for their respective 
maintainers.  It seem prudent to wait until after that task is complete 
and then convert the three remaining automake directories from version 
1.7.x that they currently use to whichever 1.8.x version ends up being 
used.  The even more straightforward update from autoconf 2.57 -> 2.59 
can wait until then also.

OK to install?
Kelley Cook
-------------- next part --------------
An embedded and charset-unspecified text was scrubbed...
Name: AC_PREREQ.patch
URL: <http://gcc.gnu.org/pipermail/gcc-patches/attachments/20040108/8b9957e0/attachment.ksh>