better cleanup

Makefile

@@ -156,4 +156,6 @@ release: clean
 	F=mongoose-`perl -lne '/define\s+MONGOOSE_VERSION\s+"(\S+)"/ and print $$1' mongoose.c`.tgz ; cd .. && tar -czf x mongoose/{LICENSE,Makefile,examples,test,build,*.[ch],*.md} && mv x mongoose/$$F
 
 clean:
-	rm -rf *.o *.core $(PROG) *.obj *.so $(PROG).txt *.dSYM *.tgz $(PROG).exe *.dll *.lib build/res.o build/res.RES
+	cd examples && $(MAKE) clean
+	rm -rf *.o *.core $(PROG) *.obj *.so $(PROG).txt *.dSYM *.tgz \
+	$(PROG).exe *.dll *.lib build/res.o build/res.RES *.dSYM

examples/Makefile

@@ -25,4 +25,4 @@ windows:
 	$(CL) /DUSE_WEBSOCKET websocket.c ../mongoose.c $(CLFLAGS)
 
 clean:
-	rm -rf hello hello.exe upload upload.exe post post.exe websocket websocket.exe chat chat.exe *.dSYM *.obj
+	rm -rf hello upload post websocket chat *.exe *.dSYM *.obj