CONTRIB: mod_defender: make the code build with the embedded includes

From now on the code only needs its embedded dependencies and does not
depend any more on external haproxy dependencies. It can now be built
as a standalone project.
diff --git a/contrib/mod_defender/Makefile b/contrib/mod_defender/Makefile
index ca06cef..dfd0b74 100644
--- a/contrib/mod_defender/Makefile
+++ b/contrib/mod_defender/Makefile
@@ -28,7 +28,7 @@
 endif
 
 CFLAGS  += -g -Wall -pthread
-INCS += -I../../include -I$(MOD_DEFENDER_SRC) -I$(APACHE2_INC) -I$(APR_INC) -I$(EVENT_INC)
+INCS += -Iinclude -I$(MOD_DEFENDER_SRC) -I$(APACHE2_INC) -I$(APR_INC) -I$(EVENT_INC)
 LIBS += -lpthread  $(EVENT_LIB) -levent_pthreads -lapr-1 -laprutil-1 -lstdc++ -lm
 
 CXXFLAGS = -g -std=gnu++11
diff --git a/contrib/mod_defender/defender.c b/contrib/mod_defender/defender.c
index e798a22..fa3910e 100644
--- a/contrib/mod_defender/defender.c
+++ b/contrib/mod_defender/defender.c
@@ -18,10 +18,7 @@
 #include <stdio.h>
 #include <stdarg.h>
 
-#include <haproxy/api.h>
-#include <haproxy/chunk.h>
 #include <haproxy/spoe.h>
-#include <haproxy/time.h>
 #include <haproxy/tools.h>
 
 #include <http_core.h>
diff --git a/contrib/mod_defender/spoa.c b/contrib/mod_defender/spoa.c
index 78c009e..e96b95e 100644
--- a/contrib/mod_defender/spoa.c
+++ b/contrib/mod_defender/spoa.c
@@ -31,7 +31,6 @@
 #include <event2/event_struct.h>
 #include <event2/thread.h>
 
-#include <haproxy/chunk.h>
 #include <haproxy/list.h>
 #include <haproxy/spoe.h>