sched_ctx_hypervisor: add showcheck target in Makefile.am files

sched_ctx_hypervisor/Makefile.am

@@ -19,3 +19,8 @@ versincludedir = $(includedir)/starpu/$(STARPU_EFFECTIVE_VERSION)
 
 versinclude_HEADERS = include/sched_ctx_hypervisor.h
 
+showcheck:
+	for i in $(SUBDIRS) ; do \
+		make -C $$i showcheck ; \
+	done
+

sched_ctx_hypervisor/examples/Makefile.am

@@ -55,3 +55,6 @@ app_driven_test_app_driven_test_LDADD =		\
 	$(top_builddir)/sched_ctx_hypervisor/src/libsched_ctx_hypervisor.la
 
 endif
+
+showcheck:
+	-cat $(TEST_LOGS) /dev/null

sched_ctx_hypervisor/src/Makefile.am

@@ -37,3 +37,6 @@ libsched_ctx_hypervisor_la_SOURCES = 			\
 noinst_HEADERS = sched_ctx_hypervisor_intern.h		\
 	hypervisor_policies/policy_tools.h		\
 	hypervisor_policies/lp_tools.h
+
+showcheck:
+	-cat /dev/null