The targets in test/Makefile are quite verbose today. For example, `make test-hotspot-internal` currently prints:
[ehelin@ehelin dev]$ make test-hotspot-internal
Building target 'test-hotspot-internal' in configuration 'x64-slow'
make[3]: warning: -jN forced in submake: disabling jobserver mode.
/home/ehelin/code/jdk9/dev/../deps/install/jpg/infra/builddeps/gnumake-linux_x64/4.0+1.0/gnumake-linux_x64-4.0+1.0.tar.gz/bin/make -k -C /home/ehelin/code/jdk9/dev/hotspot/test CONCURRENCY=1 TEST=hotspot_internal hotspot_internal
make[4]: Entering directory '/home/ehelin/code/jdk9/dev/hotspot/test'

I suggest that we remove "Entering directory" and also silcence the make invocation:

diff -r 3ca929279adb test/Makefile
--- a/test/Makefile Fri Feb 05 09:41:16 2016 +0100
+++ b/test/Makefile Fri Feb 05 13:22:06 2016 +0100
@@ -40,8 +40,7 @@
 define SUBDIR_TEST # subdirectory target
 if [ -d $1 ] ; then \
   if [ -r $1/test/Makefile ] ; then \
- echo "$(MAKE) -k -C $1/test $2" ; \
- $(MAKE) -k -C $1/test $2 ; \
+ $(MAKE) --no-print-directory -k -C $1/test $2 ; \
   else \
     echo "ERROR: File does not exist: $1/test/Makefile"; \
     exit 1; \