[libmediaart] build: include m4 dir parsing

[Vadim Rutkovsky <vrutkovsky src gnome org>]

commit 23e2f615c873acada6e345ccf0298a83881b553c
Author: Vadim Rutkovsky <vrutkovs redhat com>
Date:   Fri Aug 15 14:02:14 2014 +0200

    build: include m4 dir parsing

 Makefile.am |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index d01d44a..ba48084 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,5 +1,7 @@
 include $(top_srcdir)/Makefile.decl
 
+ACLOCAL_AMFLAGS = -I m4 ${ACLOCAL_FLAGS}
+
 SUBDIRS = libmediaart docs
 
 if HAVE_UNIT_TESTS