Make make silent with AM_SILENT_RULES([yes])

Change-Id: Ib8a55d6df1266ca33d3fd6f1283489df3fa28d8a

configure.ac

@@ -3,6 +3,7 @@
 AC_PREREQ([2.60])
 AC_INIT([knot], [1.3.0-dev], [knot-dns@labs.nic.cz])
 AM_INIT_AUTOMAKE([gnu subdir-objects dist-bzip2 dist-xz -Wall -Werror])
+AM_SILENT_RULES([yes])
 AC_CONFIG_SRCDIR([src/knot/main.c])
 AC_CONFIG_HEADERS([src/config.h])
 AC_CONFIG_MACRO_DIR([m4])