test: Include the runtime DLLs even if not running tests

This makes the produced binaries ready for running separately
afterwards, which was regressed in
e16ba0772f.

test/Makefile

@@ -224,6 +224,8 @@ LOCAL_RUNTIMES = $(patsubst $(RUNTIMES_SRC)/%, %, $(wildcard $(addprefix $(RUNTI
 $(LOCAL_RUNTIMES): %$(DLLEXT): $(RUNTIMES_SRC)/%$(DLLEXT)
 	cp -a $< $@
 	$(COPY_TARGET)
+
+all: $(LOCAL_RUNTIMES)
 endif
 
 TESTS = $(filter-out %$(DLLEXT), $(TARGETS))