Add missing requirement of IkiWiki::render before starting to render things

IkiWiki/Setup.pm

@@ -97,6 +97,8 @@ sub setup () { #{{{
 	loadplugins();
 	checkconfig();
 
+	require IkiWiki::Render;
+
 	if ($config{render}) {
 		commandline_render();
 	}

doc/bugs/Undefined_subroutine_IkiWiki::refresh.mdwn

@@ -3,4 +3,5 @@ After building a fresh deb from current Git master (9b62dac4bcf62f3a1f76ec5a7ed5
         $ ikiwiki --setup ~/ikiwiki.setup  --rebuild
         Undefined subroutine &IkiWiki::refresh called at /usr/share/perl5/IkiWiki/Setup.pm line 113.
 
-> Patch coming soon to the "bugs" branch in http://git.debian.org/?p=users/smcv/ikiwiki.git --smcv
+> [[done]], it just needed "require IkiWiki::Render" before it started
+> rendering. --[[smcv]]