REORG: include: move arg.h to haproxy/arg{,-t}.h
Almost no change was needed; chunk.h was replaced with buf-t.h.
It dpeends on types/vars.h and types/protocol_buffers.h.
diff --git a/include/proto/protocol_buffers.h b/include/proto/protocol_buffers.h
index 0426d83..3e1571a 100644
--- a/include/proto/protocol_buffers.h
+++ b/include/proto/protocol_buffers.h
@@ -23,7 +23,7 @@
#define _PROTO_PROTOCOL_BUFFERS_H
#include <inttypes.h>
-#include <types/arg.h>
+#include <haproxy/arg-t.h>
#include <types/protocol_buffers.h>
#include <proto/sample.h>