[autotools] Add AC_PREREQ autoconf version test for dune-common.

Update minimal required versions to these mentioned in the documentation.
Quote argument in AC_PREREQ.
(Thanks to Bård Skaflestad for the heads-up)

README.SVN

@@ -4,9 +4,9 @@ Preparing the SVN-sources
 Additional to the software mentioned in README you'll need the
 following programs installed on your system:
 
-  automake >= 1.5
+  automake >= 1.9
 
-  autoconf >= 2.50
+  autoconf >= 2.52
 
   libtool
 
@@ -23,6 +23,3 @@ provide external components! The Dune-library and -headers are
 independent of other libraries, instead the applications can choose
 which parts to use.
 
-$Id$
-
-

bin/dunecontrol

@@ -1049,7 +1049,7 @@ case "$command" in
 
 m4_define([DUNE_AC_INIT],[
   AC_INIT([$name], [$version], [$maintainer])
-  AM_INIT_AUTOMAKE([foreign 1.5 tar-pax])
+  AM_INIT_AUTOMAKE([foreign 1.9 tar-pax])
   m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([no])])
   AC_SUBST([DUNE_MOD_VERSION], [$version])
   AC_SUBST([DUNE_MOD_NAME], [$name])

bin/duneproject

@@ -319,7 +319,7 @@ echo "- $PROJECT/configure.ac"
 cat > "$PROJECT/configure.ac" <<C_DELIM
 # -*- Autoconf -*-
 # Process this file with autoconf to produce a configure script.
-AC_PREREQ(2.50)
+AC_PREREQ([2.62])
 DUNE_AC_INIT # gets module version from dune.module file
 AM_INIT_AUTOMAKE
 AC_CONFIG_SRCDIR([src/$CMODULE.cc])
@@ -363,9 +363,9 @@ Preparing the Sources
 Additional to the software mentioned in README you'll need the
 following programs installed on your system:
 
-  automake >= 1.5
+  automake >= 1.9
 
-  autoconf >= 2.50
+  autoconf >= 2.62
 
   libtool
 
@@ -654,8 +654,8 @@ ${CMODULE}_LDFLAGS = \$(AM_LDFLAGS) \\
 	\$(DUNE_LDFLAGS)
 
 # don't follow the full GNU-standard
-# we need automake 1.5
-AUTOMAKE_OPTIONS = foreign 1.5
+# we need automake 1.9
+AUTOMAKE_OPTIONS = foreign 1.9
 
 # pass most important options when "make distcheck" is used
 DISTCHECK_CONFIGURE_FLAGS = $DISTCHECK_CONFIGURE_FLAGS CXX="\$(CXX)" CC="\$(CC)"

configure.ac

 #! /bin/bash
-# $Id$
 # Process this file with autoconf to produce a configure script.
 
+AC_PREREQ([2.62])
 DUNE_AC_INIT # gets module version from dune.module file
 AM_INIT_AUTOMAKE
 AC_CONFIG_SRCDIR([dune/common/stdstreams.cc])