Fix aclocal warning:
/usr/share/aclocal/libart.m4:11: warning: underquoted definition of AM_PATH_LIBART
--- gnome-libs-1.4.2/libart_lgpl/libart.m4
+++ gnome-libs-1.4.2/libart_lgpl/libart.m4
@@ -10,3 +10,3 @@
 dnl
-AC_DEFUN(AM_PATH_LIBART,
+AC_DEFUN([AM_PATH_LIBART],
 [dnl