Frank Shearar uploaded a new version of Kernel to project The Inbox:
http://source.squeak.org/inbox/Kernel-fbs.759.mcz

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

Name: Kernel-fbs.759
Author: fbs
Time: 9 May 2013, 10:41:55.664 pm
UUID: 57c2cc74-de19-4978-a3ed-c8917f44374d
Ancestors: Kernel-cmm.758

Depends on Environments-fbs.27. Use the new #rootClasses on the 'top' Environment.

=============== Diff against Kernel-cmm.758 ===============

Item was changed:
  ----- Method: Class class>>rootsOfTheWorld (in category 'inquiries') -----
  rootsOfTheWorld
  	"return a collection of classes which have a nil superclass"
+ 	^ Smalltalk globals rootClasses!
- 	^(Smalltalk globals select: [:each | each isBehavior and: [each superclass isNil]]) asOrderedCollection!