Update copyright year, since the file has been modified

I fell over a new libtool that starts with a newline so we need to fetch
the two first lines to get the version string. The good news is that older
libtools have an empty line after the first

I fell over a new libtool that starts with a newline so we need to fetch
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...

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As Alexander Lazic pointed out, run the buildconf from the ares dir if that
is present instead of trying to duplicate that stuff in this script.

added our regular source header

allow more evironment variables to control what tools to check for and use

use ACLOCAL even when using 'find' to find the aclocal tool

use -c to automake to copy the new files

run libtoolize in the ares dir as well, and modified the output slightly for
all tools run in the ares dir - now shown like "running ares/[tool]"

make sure the found tool is a regular file (and not a dir or something)

Modified to use 'head -n 1' instead of 'head -1' since some versions of head
complains and claims this is deprecated.

Reverted Tupone Alfredo's patch, as it broke NUMEROUS autobuilds. Let's do the
changes in a slower and more controlled manner...

Tupone Alfredo's fixes:

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 w

Tupone Alfredo's fixes:

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.)

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bail out if perl is missing, it is needed for building curl anyway

check for libtoolize and aclocal to doublecheck the installations better

./src/config.h.in is now removed from CVS. It is copied from the
lib/config.h.in file by buildconf

Jean-Philippe Barrette-LaPierre made buildconf run better on Mac OS X by
properly using glibtoolize instead of plain libtoolize. (This is made if
glibtool was found and used instead of plain

Jean-Philippe Barrette-LaPierre made buildconf run better on Mac OS X by
properly using glibtoolize instead of plain libtoolize. (This is made if
glibtool was found and used instead of plain libtool.)

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simplified all die messages

simplified the automake failed message too

simplified the die-line when aclocal fails, the previous one confused
the netbsd shell

when checking the automake version, cut off trailing "-p[whatever]" from the
version string before doing the version number checks.

recognize and use ACLOCAL_FLAGS if set (Thomas Schwinge patch)

Check for a GNU version of m4, since autoconf won't run nicely without one.

if ares is present, run aclocal in that dir before autoconf is run

AIX and Tru64 have what Tor calls "horribly broken 'which' programs" so we
now scan the PATH ourself to find the path to (g)libtool

use libtoolize --force to overwrite existing (older) files