Prevent pickig up old automake which breaks with:
configure.ac:52: option `dist-xz' not recognized

Index: autogen.sh
--- autogen.sh.orig
+++ autogen.sh
@@ -91,14 +91,14 @@ fi
 
 touch ChangeLog
 
-${ACLOCAL} -I m4/ ${ACLOCAL_FLAGS} || exit $?
+aclocal -I m4/ ${ACLOCAL_FLAGS} || exit $?
 
 ${LIBTOOLIZE} --force || exit $?
 gtkdocize || exit $?
 
 autoheader || exit $?
 
-${AUTOMAKE} --add-missing || exit $?
+automake --add-missing || exit $?
 autoconf || exit $?
 cd ${ORIGDIR} || exit $?