needed, and being able to define it if appropriate for further configure tests
as well as for the generated config file.

Introduced reentrant.m4 intended for our reentrant related autotools/m4 macros.

the two first lines to get the version string. The good news is that older
libtools have an empty line after the first so I think this works fine all
over...

is present instead of trying to duplicate that stuff in this script.

all tools run in the ares dir - now shown like "running ares/[tool]"

complains and claims this is deprecated.

changes in a slower and more controlled manner...

1) findtool does look per tool in PATH and think ./perl is the perl
executable, while is just a local directory (I have . in the PATH)

2) I got several warning for head -1 deprecated in favour of head -n 1

3) ares directory is missing some file (missing is missing :-) ) because
automake and friends is not run.

(Let's hope number 2 doesn't break somewhere "out there", if so we can always
search/replace that back.)

lib/config.h.in file by buildconf

properly using glibtoolize instead of plain libtoolize. (This is made if
glibtool was found and used instead of plain libtool.)

the netbsd shell

version string before doing the version number checks.

now scan the PATH ourself to find the path to (g)libtool

run in a sane manner on his MPE/iX operating system.

been run "as usual"

require autoconf 2.57
require automake 1.7