+* `IkiWiki.pm:wiki_file_prune_regexps` avoids copying CVS metadata
+into `$DESTDIR`.
+* `IkiWiki/Wrapper.pm` provides a new "wrapperargcheck" hook, which
+the plugin implements to avoid calling ikiwiki from post-commit
+(and locking against itself) if it's a directory being `cvs add`ed.