[freenet-devl] Fproxy - KSKs that redirect to SSKs should return 301, not just stream the file

[toad]

According to RFC2616, status code 301 indicates:
10.3.2 301 Moved Permanently

The requested resource has been assigned a new permanent URI and any
future references to this resource SHOULD use one of the returned
URIs.  Clients with link editing capabilities ought to automatically
re-link references to the Request-URI to one or more of the new