REORG: http: move HTTP rules parsing to http_rules.c

These ones are mostly called from cfgparse.c for the parsing and do
not depend on the HTTP representation. The functions's prototypes
were moved to proto/http_rules.h, making this file work exactly like
tcp_rules. Ideally we should stop calling these functions directly
from cfgparse and register keywords, but there are a few cases where
that wouldn't work (stats http-request) so it's probably not worth
trying to go this far.
diff --git a/include/proto/stream.h b/include/proto/stream.h
index 5e7c4cc..0e1cf66 100644
--- a/include/proto/stream.h
+++ b/include/proto/stream.h
@@ -24,6 +24,7 @@
 
 #include <common/config.h>
 #include <common/memory.h>
+#include <types/action.h>
 #include <types/stream.h>
 #include <proto/fd.h>
 #include <proto/freq_ctr.h>