*/Makefile.am: add missing showcheck rules

gcc-plugin/Makefile.am

@@ -16,3 +16,8 @@
 SUBDIRS = src tests examples
 
 EXTRA_DIST = COPYING README
+
+showcheck:
+	for i in $(SUBDIRS) ; do \
+		make -C $$i showcheck ; \
+	done

gcc-plugin/examples/Makefile.am

@@ -70,3 +70,9 @@ else !STARPU_USE_CUDA
 EXTRA_DIST += vector_scal/vector_scal_cuda.cu
 
 endif
+
+showcheck:
+	-cat $(TEST_LOGS) /dev/null
+	for i in $(SUBDIRS) ; do \
+		make -C $$i showcheck ; \
+	done

src/Makefile.am

@@ -226,3 +226,6 @@ if STARPU_USE_OPENCL
 libstarpu_@STARPU_EFFECTIVE_VERSION@_la_SOURCES += drivers/opencl/driver_opencl.c
 libstarpu_@STARPU_EFFECTIVE_VERSION@_la_SOURCES += drivers/opencl/driver_opencl_utils.c
 endif
+
+showcheck:
+	-cat /dev/null