REORG: include: move acl.h to haproxy/acl.h{,-t}.h

The files were moved almost as-is, just dropping arg-t and auth-t from
acl-t but keeping arg-t in acl.h. It was useful to revisit the call places
since a handful of files used to continue to include acl.h while they did
not need it at all. Struct stream was only made a forward declaration
since not otherwise needed.
diff --git a/src/payload.c b/src/payload.c
index 5664ec7..c4f8b2c 100644
--- a/src/payload.c
+++ b/src/payload.c
@@ -13,13 +13,13 @@
 #include <stdlib.h>
 #include <string.h>
 
+#include <haproxy/acl.h>
 #include <haproxy/api.h>
 #include <haproxy/connection.h>
 #include <haproxy/net_helper.h>
 #include <haproxy/payload.h>
 #include <haproxy/pattern.h>
 #include <haproxy/htx.h>
-#include <proto/acl.h>
 #include <haproxy/arg.h>
 #include <proto/channel.h>
 #include <haproxy/sample.h>