[MINOR] merge ebtree version 3.0

Version 3.0 of ebtree has been merged in but is not used yet.
diff --git a/Makefile b/Makefile
index 2d4ede2..aa523cd 100644
--- a/Makefile
+++ b/Makefile
@@ -232,7 +232,9 @@
        src/checks.o src/queue.o src/client.o src/proxy.o src/proto_uxst.o \
        src/proto_http.o src/stream_sock.o src/appsession.o src/backend.o \
        src/senddata.o src/dumpstats.o src/proto_tcp.o \
-       src/session.o src/hdr_idx.o src/ev_select.o src/acl.o src/memory.o
+       src/session.o src/hdr_idx.o src/ev_select.o \
+       src/acl.o src/memory.o \
+       src/ebtree.o src/eb32tree.o
 
 haproxy: $(OBJS) $(OPT_OBJS)
 	$(LD) $(LDFLAGS) -o $@ $^ $(LIBS)