Add clean target and test subdir to makefile.nmake

Makefile.nmake

@@ -3,3 +3,13 @@ all:
 	$(MAKE) /F Makefile.nmake
 	cd ../../src/or
 	$(MAKE) /F Makefile.nmake
+	cd ../../src/test
+	$(MAKE) /F Makefile.nmake
+
+clean:
+	cd src/common
+	$(MAKE) /F Makefile.nmake clean
+	cd ../../src/or
+	$(MAKE) /F Makefile.nmake clean
+	cd ../../src/test
+	$(MAKE) /F Makefile.nmake clean

src/common/Makefile.nmake

@@ -18,3 +18,6 @@ libor-crypto.lib: $(LIBOR_CRYPTO_OBJECTS)
 
 libor-event.lib:  $(LIBOR_EVENT_OBJECTS)
 	lib $(LIBOR_EVENT_OBJECTS) /out:libor-event.lib
+
+clean:
+	del *.obj *.lib libor*.lib