add src/test_grabbag/picture/Makefile to AC_OUTPUT
diff --git a/configure.in b/configure.in
index 30ac4d6..17f05fa 100644
--- a/configure.in
+++ b/configure.in
@@ -314,6 +314,7 @@
 	src/share/utf8/Makefile \
 	src/test_grabbag/Makefile \
 	src/test_grabbag/cuesheet/Makefile \
+	src/test_grabbag/picture/Makefile \
 	src/test_libs_common/Makefile \
 	src/test_libFLAC/Makefile \
 	src/test_libFLAC++/Makefile \