CONTRIB: spoa_example: allow to compile outside HAProxy.
Don't include haproxy's includes anymore and use a local copy instead.
diff --git a/contrib/spoa_example/Makefile b/contrib/spoa_example/Makefile
index 3105ef0..d04a01e 100644
--- a/contrib/spoa_example/Makefile
+++ b/contrib/spoa_example/Makefile
@@ -6,8 +6,8 @@
LD = $(CC)
CFLAGS = -g -O2 -Wall -Werror -pthread
-LDFLAGS = -lpthread -levent -levent_pthreads
-INCS += -I../../include -I../../ebtree
+LDFLAGS = -lpthread -levent -levent_pthreads
+INCS += -I../../ebtree -I./include
LIBS =
OBJS = spoa.o