REORG: include: move common/namespace.h to haproxy/namespace{,-t}.h
The type was moved out as it's used by standard.h for netns_entry.
Instead of just being a forward declaration when not used, it's an
empty struct, which makes gdb happier (the resulting stripped executable
is the same).
diff --git a/src/standard.c b/src/standard.c
index 2b32429..8e9722e 100644
--- a/src/standard.c
+++ b/src/standard.c
@@ -38,6 +38,7 @@
#include <haproxy/api.h>
#include <haproxy/chunk.h>
+#include <haproxy/namespace.h>
#include <common/standard.h>
#include <types/global.h>
#include <proto/applet.h>