This patch allows disabling the backlinks in the config file by setting nobacklinks to 0.

It is backwards compatible, and by default enables backlinks in the generated pages.

--- IkiWiki/Render.pm.orig2 2009-01-06 14:54:01.000000000 +1300
+++ IkiWiki/Render.pm   2009-01-06 14:55:08.000000000 +1300
@@ -107,7 +107,8 @@
        $template->param(have_actions => 1);
    }
 
-   my @backlinks=sort { $a->{page} cmp $b->{page} } backlinks($page);
+   my @backlinks=sort { $a->{page} cmp $b->{page} } backlinks($page)
+       unless defined $config{nobacklinks} && $config{nobacklinks} == 0;
    my ($backlinks, $more_backlinks);
    if (@backlinks <= $config{numbacklinks} || ! $config{numbacklinks}) {
        $backlinks=\@backlinks;