[build] add GNUMAKEFLAGS=--no-print-directory

quiet some automake noise during build
(can use 'make -s' to quiet more)

In doc/ and tests/docroot/, add GNUMAKEFLAGS=--no-print-directory -s

Makefile.am

@@ -7,3 +7,5 @@ ACLOCAL_AMFLAGS = -I m4 -I scripts/m4
 distcleancheck_listfiles = find -type f -exec sh -c 'test -f $(srcdir)/{} || echo {}' ';'
 
 AM_DISTCHECK_CONFIGURE_FLAGS=--with-openssl
+
+GNUMAKEFLAGS=--no-print-directory

doc/Makefile.am

@@ -1,5 +1,6 @@
 SUBDIRS=config scripts systemd outdated
 dist_man8_MANS=lighttpd.8 lighttpd-angel.8
+GNUMAKEFLAGS=--no-print-directory -s
 
 EXTRA_DIST= \
 	initscripts.txt \

tests/docroot/Makefile.am

@@ -1 +1,2 @@
 SUBDIRS=123 www
+GNUMAKEFLAGS=--no-print-directory -s