[PATCH] Fixup RSS feed

The RSS feed should be sent with a MIME type of application/xhtml+xml.
Furthermore fixup the XML header and add a link to the feed on the changes
page.

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
---
 src/wiki.c |    7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

Index: didiwiki/src/wiki.c
===================================================================
--- didiwiki.orig/src/wiki.c
+++ didiwiki/src/wiki.c
@@ -737,6 +737,9 @@
 			   datebuf);
     }
 
+  http_response_printf(res, "<p>Wiki changes are also available as a "
+					   "<a href='ChangesRss'>RSS</a> feed.\n");
+
   wiki_show_footer(res);
   http_response_send(res);
   exit(0);
@@ -752,7 +755,9 @@
 
   pages = wiki_get_pages(&n_pages, NULL);
 
-  http_response_printf(res, "<?xml version=\"1.0\"encoding=\"ISO-8859-1\"?>\n"
+  http_response_set_content_type(res, "application/xhtml+xml");
+
+  http_response_printf(res, "<?xml version=\"1.0\" encoding=\"ISO-8859-1\"?>\n"
                             "<rss version=\"2.0\">\n"
 		            "<channel><title>DidiWiki Changes feed</title>\n");