Add release-tagging function.

Makefile

@@ -17,18 +17,16 @@ ifneq ($(CROSS_COMPILE),)
   AR := $(CROSS_COMPILE)$(AR)
 endif
 
-BIN=testmdnsd
+BIN=testmdnsd mdnsd
 
 LIBTINYSVCMDNS_OBJS = mdns.o mdnsd.o
 
-.PHONY: all clean opkg
+.PHONY: all clean opkg release
 
 all: $(BIN) libtinysvcmdns.a
 
 clean:
-	-$(RM) *.o
-	-$(RM) *.bin
-	-$(RM) mdns
+	-$(RM) $(LIBTINYSVCMDNS_OBJS)
 	-$(RM) $(BIN)
 	-$(RM) libtinysvcmdns.a
 
@@ -44,10 +42,15 @@ libtinysvcmdns.a: $(patsubst %, libtinysvcmdns.a(%), $(LIBTINYSVCMDNS_OBJS))
 
 mdnsd: testmdnsd
 	strip -o $@ $<
-	install -C -D -p mdnsd sbin/
 
 opkg: mdnsd $(wildcard opkg/CONTROL/*) etc/init.d/S80mdnsd
 	install -D -p mdnsd opkg/sbin
 	install -D -p etc/init.d/S80mdnsd opkg/etc/init.d/
 	opkg-pack opkg
+
+release: opkg
+	tagname=$$(echo zeroconf*.opk | sed -n 'p;q') && \
+	 tagname="$${tagname%_*.*}" && \
+	 test -n "$${tagname}" && \
+	 git tag -f -a -m "Release $${tagname}" "$${tagname}"