[metacity] redo autogen.sh, don't use gnome-autogen.sh

[Alberts Muktupāvels <muktupavels src gnome org>]

commit e0dd22b29f2f8f1c93630fae0d99223f9e151152
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Sun Sep 20 01:36:44 2015 +0300

    redo autogen.sh, don't use gnome-autogen.sh
    
    https://wiki.gnome.org/Projects/GnomeCommon/Migration

 autogen.sh |   48 +++++++++++++++++++++++++++++++++---------------
 1 files changed, 33 insertions(+), 15 deletions(-)
---
diff --git a/autogen.sh b/autogen.sh
index 9822302..16d2495 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -1,22 +1,40 @@
-#!/bin/bash
+#!/bin/sh
+#
 # Run this to generate all the initial makefiles, etc.
 
-srcdir=`dirname $0`
+srcdir=$(dirname "$0")
 test -z "$srcdir" && srcdir=.
 
-REQUIRED_AUTOMAKE_VERSION=1.10
+if [ ! -f $srcdir/configure.ac ]; then
+  echo "**Error**: Directory "\'$srcdir\'" does not look like the top-level" \
+       "project directory."
+  exit 1
+fi
 
-(test -f $srcdir/configure.ac \
-  && test -d $srcdir/src) || {
-    echo -n "**Error**: Directory "\`$srcdir\'" does not look like the"
-    echo " top-level metacity directory"
-    exit 1
-}
+PKG_NAME=$(autoconf --trace 'AC_INIT:$1' "$srcdir/configure.ac")
 
-which gnome-autogen.sh || {
-    echo "You need to install gnome-common from GNOME Subversion (or from"
-    echo "your distribution's package manager)."
-    exit 1
-}
+if [ "$#" = 0 ] && [ -z "$NOCONFIGURE" ]; then
+  echo "**Warning**: I am going to run 'configure' with no arguments." >&2
+  echo "If you wish to pass any to it, please specify them on the '$0'" \
+       "command line." >&2
+fi
 
-. gnome-autogen.sh
+set -x
+aclocal --install || exit 1
+intltoolize --force --copy --automake || exit 1
+autoreconf --verbose --force --install -Wno-portability || exit 1
+{ set +x; } 2>/dev/null
+
+if [ -z "$NOCONFIGURE" ]; then
+  set -x
+  $srcdir/configure "$@" || exit 1
+  { set +x; } 2>/dev/null
+
+  if [ "$1" = "--help" ]; then
+    exit 0
+  else
+    echo "Now type 'make' to compile $PKG_NAME." || exit 1
+  fi
+else
+  echo "Skipping configure process."
+fi