restore autogen.sh for detecting arch

sflphone-common/libs/pjproject/autogen.sh

+#!/bin/bash
+#####################################################
+# File Name: autogen.sh
+#
+# Purpose :
+#
+# Author: Julien Bonjean (julien@bonjean.info) 
+#
+# Creation Date: 2009-05-26
+# Last Modified: 2009-06-01 18:25:28 -0400
+#####################################################
+
+if [ -e /usr/share/misc/config.guess ]; then
+	rm -f config.sub config.guess
+        ln -s /usr/share/misc/config.sub .
+        ln -s /usr/share/misc/config.guess .	
+elif [ -e /usr/lib/rpm/config.guess ]; then
+	rm -f config.sub config.guess
+	ln -s /usr/lib/rpm/config.sub .
+	ln -s /usr/lib/rpm/config.guess .
+else
+	aclocal --force
+	automake --add-missing --force-missing --copy	
+fi
+
+exit 0