enable action bar on misctemplates

So RecentChanges shows on the action bar there,
convert recentchanges to use new pageactions hook,
with compatability code to avoid breaking old templates.

IkiWiki.pm

@@ -1748,7 +1748,6 @@ sub misctemplate ($$;@) {
 
 	$template->param(
 		dynamic => 1,
-		have_actions => 0, # force off
 		title => $title,
 		wikiname => $config{wikiname},
 		content => $content,
@@ -1756,6 +1755,16 @@ sub misctemplate ($$;@) {
 		html5 => $config{html5},
 		@_,
 	);
+	
+	my @actions;
+	run_hooks(pageactions => sub {
+		push @actions, map { { action => $_ } } 
+			grep { defined } shift->(page => "");
+	});
+	$template->param(actions => \@actions);
+	if (@actions) {
+		$template->param(have_actions => 1);
+	}
 
 	return $template->output;
 }

IkiWiki/Plugin/recentchanges.pm

@@ -11,6 +11,7 @@ sub import {
 	hook(type => "getsetup", id => "recentchanges", call => \&getsetup);
 	hook(type => "checkconfig", id => "recentchanges", call => \&checkconfig);
 	hook(type => "refresh", id => "recentchanges", call => \&refresh);
+	hook(type => "pageactions", id => "recentchanges", call => \&pageactions);
 	hook(type => "pagetemplate", id => "recentchanges", call => \&pagetemplate);
 	hook(type => "htmlize", id => "_change", call => \&htmlize);
 	# Load goto to fix up links from recentchanges
@@ -61,14 +62,27 @@ sub refresh ($) {
 }
 
 # Enable the recentchanges link on wiki pages.
+sub pageactions (@) {
+	my %params=@_;
+	my $page=$params{page};
+
+	if (defined $config{recentchangespage} && $config{rcs} &&
+	    $page ne $config{recentchangespage}) {
+		return htmllink($page, $page, $config{recentchangespage},
+			gettext("RecentChanges"));
+	}
+}
+
+# Backwards compatability for templates still using
+# RECENTCHANGESURL.
 sub pagetemplate (@) {
 	my %params=@_;
 	my $template=$params{template};
 	my $page=$params{page};
 
 	if (defined $config{recentchangespage} && $config{rcs} &&
-	    $page ne $config{recentchangespage} &&
-	    $template->query(name => "recentchangesurl")) {
+	    $template->query(name => "recentchangesurl") &&
+	    $page ne $config{recentchangespage}) {
 		$template->param(recentchangesurl => urlto($config{recentchangespage}, $page));
 		$template->param(have_actions => 1);
 	}

templates/page.tmpl

@@ -61,9 +61,6 @@
 <TMPL_IF EDITURL>
 <li><a href="<TMPL_VAR EDITURL>" rel="nofollow">Edit</a></li>
 </TMPL_IF>
-<TMPL_IF RECENTCHANGESURL>
-<li><a href="<TMPL_VAR RECENTCHANGESURL>">RecentChanges</a></li>
-</TMPL_IF>
 <TMPL_IF HISTORYURL>
 <li><a href="<TMPL_VAR HISTORYURL>">History</a></li>
 </TMPL_IF>