Add bridge command

New tool to allow manipulating forwarding entries and monitoring
bridge events.
diff --git a/bridge/Makefile b/bridge/Makefile
new file mode 100644
index 0000000..0c333bf
--- /dev/null
+++ b/bridge/Makefile
@@ -0,0 +1,14 @@
+BROBJ = bridge.o fdb.o monitor.o link.o
+
+include ../Config
+
+all: bridge
+
+bridge: $(BROBJ) $(LIBNETLINK) 
+
+install: all
+	install -m 0755 br $(DESTDIR)$(SBINDIR)
+
+clean:
+	rm -f $(BROBJ) br
+