Eliot Miranda uploaded a new version of System to project Spur:
http://source.squeak.org/spur/System-dtl.672.mcz

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

Name: System-dtl.672
Author: eem
Time: 14 May 2014, 11:58:30.497 am
UUID: 6be0bcb1-987f-495c-aff3-8ac2cfe4ebbd
Ancestors: System-dtl.672

System-dtl.672 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 System-dtl.672 ===============