[gnome-themes-extra/jjardon/no_gnomecommon] autogen.sh: Use upstream autoreconf instead deprecated gnome-autogen

[Javier Jardón Cabezas <jjardon src gnome org>]

commit ed24e60a8e710a5df6c75b81d41dc2d54f5ccb69
Author: Javier Jardón <jjardon gnome org>
Date:   Mon Jan 21 00:38:09 2019 +0000

    autogen.sh: Use upstream autoreconf instead deprecated gnome-autogen
    
    See https://wiki.gnome.org/Projects/GnomeCommon/Migration

 autogen.sh | 47 +++++++++++++++++++++++++++++++++--------------
 1 file changed, 33 insertions(+), 14 deletions(-)
---
diff --git a/autogen.sh b/autogen.sh
index 73198f8f..b3519322 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -1,21 +1,40 @@
 #!/bin/sh
 # Run this to generate all the initial makefiles, etc.
+test -n "$srcdir" || srcdir=$(dirname "$0")
+test -n "$srcdir" || srcdir=.
 
-srcdir=`dirname $0`
-test -z "$srcdir" && srcdir=.
+olddir=$(pwd)
 
-PKG_NAME="gnome-themes-standard"
-REQUIRED_AUTOMAKE_VERSION=1.9
+cd $srcdir
 
-(test -f $srcdir/configure.ac \
-  && test -d $srcdir/themes) || {
-    echo -n "**Error**: Directory "\`$srcdir\'" does not look like the"
-    echo " top-level $PKG_NAME directory"
-    exit 1
+(test -f configure.ac) || {
+        echo "*** ERROR: Directory '$srcdir' does not look like the top-level project directory ***"
+        exit 1
 }
 
-which gnome-autogen.sh || {
-    echo "You need to install gnome-common from the GNOME git"
-    exit 1
-}
-USE_GNOME2_MACROS=1 . gnome-autogen.sh
+# shellcheck disable=SC2016
+PKG_NAME=$(autoconf --trace 'AC_INIT:$1' configure.ac)
+
+if [ "$#" = 0 -a "x$NOCONFIGURE" = "x" ]; 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" >&2
+        echo "*** '$0' command line." >&2
+        echo "" >&2
+fi
+
+aclocal --install || exit 1
+intltoolize --force --copy --automake || exit 1
+autoreconf --verbose --force --install || exit 1
+
+cd "$olddir"
+if [ "$NOCONFIGURE" = "" ]; then
+        $srcdir/configure "$@" || exit 1
+
+        if [ "$1" = "--help" ]; then
+                exit 0
+        else
+                echo "Now type 'make' to compile $PKG_NAME" || exit 1
+        fi
+else
+        echo "Skipping configure process."
+fi