It is $wgLegacySchemaConversion = true that causes these to be
inserted into the text table when upgrading from 1.4 or earlier,
and this is the only occurrence of $wgFastSchemaUpgrades even on
the REL1_5 branch.
Change-Id: I57634343d3515a4fb982c648e22ad23c2af0f2f6
* of megabytes of data during the conversion downtime.
*
* Serialized HistoryBlobCurStub objects will be inserted into the text table
- * on conversion if $wgFastSchemaUpgrades is set to true.
+ * on conversion if $wgLegacySchemaConversion is set to true.
*/
class HistoryBlobCurStub {
var $mCurId;