Wikimedia Bugzilla is closed!

/**
 * If set to true, the MediaWiki 1.4 to 1.5 schema conversion will
 * create stub reference rows in the text table instead of copying
 * the full text of all current entries from 'cur' to 'text'.
 *
 * This will speed up the conversion step for large sites, but
 * requires that the cur table be kept around for those revisions
 * to remain viewable.
 *
 * maintenance/migrateCurStubs.php can be used to complete the
 * migration in the background once the wiki is back online.
 *
 * This option affects the updaters *only*. Any present cur stub
 * revisions will be readable at runtime regardless of this setting.
 */
$wgLegacySchemaConversion = false;



migrateCurStubs doesn't exist... And I can't find anywhere obvious for when it did - it's not in REL1_5

http://svn.mediawiki.org/viewvc/mediawiki/branches/REL1_5/phase3/maintenance/

The documentation at minimum needs fixing, though having $wgLegacySchemaConversion is pretty useless as if you don't migrate then, you can't (easily) migrate ever.