include source headers before system headers, to fix build when older starpu is already installed

examples/stencil/Makefile.am

@@ -35,7 +35,7 @@ NVCCFLAGS += $(HWLOC_CFLAGS)
 
 .cu.o:
 	$(MKDIR_P) `dirname $@`
-	$(NVCC) $< -c -o $@ --compiler-options -fno-strict-aliasing  $(NVCCFLAGS) -I$(top_srcdir)/include/ -I$(top_builddir)/include/
+	$(NVCC) $< -c -o $@ --compiler-options -fno-strict-aliasing -I$(top_srcdir)/include/ -I$(top_builddir)/include/ $(NVCCFLAGS)
 
 
 endif