examples/Makefile.am: revert temporary fix

examples/Makefile.am

@@ -35,7 +35,7 @@ LIBS = $(top_builddir)/src/@LIBSTARPU_LINK@ $(MAGMA_LIBS) $(HWLOC_LIBS) @LIBS@ $
 AM_CPPFLAGS = -I$(top_srcdir)/include/ -I$(top_srcdir)/examples/ -I$(top_builddir)/include
 AM_LDFLAGS = @STARPU_EXPORT_DYNAMIC@ $(STARPU_OPENCL_LDFLAGS) $(STARPU_CUDA_LDFLAGS) $(STARPU_COI_LDFLAGS) $(STARPU_SCIF_LDFLAGS)
 
-#SUBDIRS = stencil
+SUBDIRS = stencil
 
 BUILT_SOURCES =