allow specification of directly linked blobs mimetypes

Signed-off-by: Michael Krelin <hacker@klever.net>

cgit.c

@@ -144,6 +144,8 @@ static void querystring_cb(const char *name, const char *value)
 		ctx.qry.path = trim_end(value, '/');
 	} else if (!strcmp(name, "name")) {
 		ctx.qry.name = xstrdup(value);
+	} else if (!strcmp(name, "mimetype")) {
+		ctx.qry.mimetype = xstrdup(value);
 	}
 }