64bit time_t

Index: feedio.c
--- feedio.c.orig
+++ feedio.c
@@ -317,7 +317,7 @@ static void WriteFeedCache (const struct feed* feed)
 	"\txmlns:snow=\"http://snownews.kcore.de/ns/1.0/\">\n\n", cache);
 
     if (feed->lastmodified)
-	fprintf (cache, "<snow:lastmodified>%ld</snow:lastmodified>\n", feed->lastmodified);
+	fprintf (cache, "<snow:lastmodified>%lld</snow:lastmodified>\n", feed->lastmodified);
 
     char* encoded = (char*) xmlEncodeEntitiesReentrant (NULL, (xmlChar*) feed->feedurl);
     fprintf (cache, "<channel rdf:about=\"%s\">\n<title>", encoded);
