Update autotools configuration

Use new libtool syntax and cleaning the code a bit

Makefile.am

 SUBDIRS = wayland compositor clients data
 
-ACLOCAL_AMFLAGS = -I m4
+ACLOCAL_AMFLAGS = -I m4 ${ACLOCAL_FLAGS}

autogen.sh

 #! /bin/sh
 
-srcdir=`dirname $0`
-test -z "$srcdir" && srcdir=.
-
-ORIGDIR=`pwd`
-cd $srcdir
-
-autoreconf --force -v --install || exit 1
-cd $ORIGDIR || exit $?
-
-$srcdir/configure "$@"
+test -n "$srcdir" || srcdir=`dirname "$0"`
+test -n "$srcdir" || srcdir=.
+(
+  cd "$srcdir" &&
+  autoreconf --force -v --install
+) || exit
+test -n "$NOCONFIGURE" || "$srcdir/configure" "$@"

configure.ac

-AC_INIT(wayland, 0.1)
-AM_INIT_AUTOMAKE([foreign dist-bzip2])
-AC_PROG_CC
-AC_PROG_LIBTOOL
-AC_CONFIG_MACRO_DIR([m4])
+AC_PREREQ([2.64])
+AC_INIT([wayland],
+        [0.1],
+        [https://bugs.freedesktop.org/enter_bug.cgi?product=wayland],
+        [wayland],
+        [http://wayland.freedesktop.org/])
+
 AC_CONFIG_HEADERS([config.h])
+AC_CONFIG_MACRO_DIR([m4])
+
+AM_INIT_AUTOMAKE([1.11 foreign dist-bzip2])
+
 AM_SILENT_RULES([yes])
 
+# Check for programs
+AC_PROG_CC
+
+# Initialize libtool
+LT_PREREQ([2.2])
+LT_INIT
+
 PKG_PROG_PKG_CONFIG()
 PKG_CHECK_MODULES(FFI, [libffi])