REORG: include: move stream_interface.h to haproxy/stream_interface{,-t}.h
Almost no changes, removed stdlib and added buf-t and connection-t to
the types to avoid a warning.
diff --git a/contrib/debug/flags.c b/contrib/debug/flags.c
index 485fc0e..0458639 100644
--- a/contrib/debug/flags.c
+++ b/contrib/debug/flags.c
@@ -5,7 +5,7 @@
#include <haproxy/connection-t.h>
#include <types/http_ana.h>
#include <types/stream.h>
-#include <types/stream_interface.h>
+#include <haproxy/stream_interface-t.h>
#include <haproxy/task-t.h>
// 1 bit per flag, no hole permitted here