Allow libtool 2.4 too

diff --git a/autogen.sh b/autogen.sh
index 7ce419f..b019aa7 100755 (executable)
--- a/autogen.sh
+++ b/autogen.sh
@@ -22,6 +22,9 @@ if libtoolize --version < /dev/null > /dev/null 2>&1 ; then
            2.2*)
                have_libtool=true
                ;;
+           2.4*)
+               have_libtool=true
+               ;;
        esac
 fi
 if $have_libtool ; then : ; else