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/http_rules.h b/include/proto/http_rules.h
new file mode 100644
index 0000000..5e03dd8
--- /dev/null
+++ b/include/proto/http_rules.h
@@ -0,0 +1,57 @@
+/*
+ * include/proto/http_rules.h
+ * This file contains "http" rules definitions
+ *
+ * Copyright (C) 2000-2018 Willy Tarreau - w@1wt.eu
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation, version 2.1
+ * exclusively.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#ifndef _PROTO_HTTP_RULES_H
+#define _PROTO_HTTP_RULES_H
+
+#include <common/config.h>
+#include <common/mini-clist.h>
+#include <types/action.h>
+#include <types/proxy.h>
+
+extern struct action_kw_list http_req_keywords;
+extern struct action_kw_list http_res_keywords;
+
+struct act_rule *parse_http_req_cond(const char **args, const char *file, int linenum, struct proxy *proxy);
+struct act_rule *parse_http_res_cond(const char **args, const char *file, int linenum, struct proxy *proxy);
+void free_http_req_rules(struct list *r);
+void free_http_res_rules(struct list *r);
+struct redirect_rule *http_parse_redirect_rule(const char *file, int linenum, struct proxy *curproxy,
+                                               const char **args, char **errmsg, int use_fmt, int dir);
+
+static inline void http_req_keywords_register(struct action_kw_list *kw_list)
+{
+	LIST_ADDQ(&http_req_keywords.list, &kw_list->list);
+}
+
+static inline void http_res_keywords_register(struct action_kw_list *kw_list)
+{
+	LIST_ADDQ(&http_res_keywords.list, &kw_list->list);
+}
+
+#endif /* _PROTO_HTTP_RULES_H */
+
+/*
+ * Local variables:
+ *  c-indent-level: 8
+ *  c-basic-offset: 8
+ * End:
+ */