Eliot Miranda uploaded a new version of System to project The Trunk:
http://source.squeak.org/trunk/System-eem.701.mcz

==================== Summary ====================

Name: System-eem.701
Author: eem
Time: 2 February 2015, 4:18:29.276 pm
UUID: 26de7d07-79ec-498e-be4c-b56922cfb457
Ancestors: System-eem.700

Invoke super obsolete in ObjectHistory class>>obsolete

=============== Diff against System-eem.700 ===============

Item was changed:
  ----- Method: ObjectHistory class>>obsolete (in category 'class initialization') -----
  obsolete
  	"Kill the mark process before removing the class."
  	Current ifNotNil:
  		[:objectHistory|
+ 		 objectHistory terminate].
+ 	super obsolete!
- 		 objectHistory terminate]!