Split the HTTP1 specific parts of the backend fetch code into a

separate source file.

bin/varnishd/Makefile.am

@@ -27,6 +27,7 @@ varnishd_SOURCES = \
 	cache/cache_gzip.c \
 	cache/cache_hash.c \
 	cache/cache_http.c \
+	cache/cache_http1_fetch.c \
 	cache/cache_http1_fsm.c \
 	cache/cache_http1_proto.c \
 	cache/cache_lck.c \

bin/varnishd/cache/cache.h

@@ -784,6 +784,10 @@ void VBO_DerefBusyObj(struct worker *wrk, struct busyobj **busyobj);
 void VBO_Free(struct busyobj **vbo);
 void VBO_extend(const struct busyobj *, ssize_t);
 
+/* cache_http1_fetch.c [V1F] */
+int V1F_fetch_hdr(struct worker *wrk, struct busyobj *bo, struct req *req);
+void V1F_fetch_body(struct worker *wrk, struct busyobj *bo);
+
 /* cache_http1_fsm.c [HTTP1] */
 typedef int (req_body_iter_f)(struct req *, void *priv, void *ptr, size_t);
 void HTTP1_Session(struct worker *, struct req *);