BUG/MEDIUM: lua: fix infinite loop about channel

Before this patch, each yield in a Lua action set a flags to be
waked up when some activity were detected on the response channel.
This behavior causes loop in the analyzer process.

This patch set the wake up on response buffer activity only if we
really want to be waked up on this activity.
diff --git a/include/types/hlua.h b/include/types/hlua.h
index b1d99f4..5a3dddb 100644
--- a/include/types/hlua.h
+++ b/include/types/hlua.h
@@ -18,6 +18,7 @@
 
 #define HLUA_RUN       0x00000001
 #define HLUA_CTRLYIELD 0x00000002
+#define HLUA_WAKERESWR 0x00000004
 
 enum hlua_exec {
 	HLUA_E_OK = 0,