Eliot Miranda uploaded a new version of Kernel to project Spur:
http://source.squeak.org/spur/Kernel-dtl.850.mcz

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

Name: Kernel-dtl.850
Author: eem
Time: 14 May 2014, 11:58:26.206 am
UUID: de06d753-7010-4899-945e-4755bf7e1046
Ancestors: Kernel-dtl.850

Kernel-dtl.850 patched for Spur by SpurBootstrapMonticelloPackagePatcher Cog-eem.152

Provide DateAndTme>>floor so that ObjectHistoryMark does not need to use instVarAt:put: to obtain a time stamp with whole seconds. This protects for future changes to DateAndTime that may not rely on an instance variable named #nanos.

=============== Diff against Kernel-dtl.850 ===============