gtkdoc-mktmpl is being removed upstream , so we should stop using it. We were not using the tmpl files at all, so this is really easy: we just need to not call it at all. (It generates files that were intended to be manually edited and checked into version control. Since we didn't edit them, they weren't doing anything.)
This would be a good candidate for a backport to the 2.4 branch.
Created attachment 244218 [details]
Comment on attachment 244218 [details]
Clearing flags on attachment: 244218
Committed r178103: <http://trac.webkit.org/changeset/178103>
All reviewed patches have been landed. Closing bug.