disable deprecation warnings for distcheck

Author: raveit65

Makefile.am

@@ -4,7 +4,8 @@ ACLOCAL_AMFLAGS = -I m4 ${ACLOCAL_FLAGS}
 
 DISTCHECK_CONFIGURE_FLAGS = \
 	--enable-gtk-doc \
-	--disable-icon-update
+	--disable-icon-update    \
+	CFLAGS='-Wno-deprecated-declarations'
 
 EXTRA_DIST = \
 	autogen.sh