Kelvin Kakugawa for CASSANDRA-1070 test_and_ci all time

cba59a81e6dd08f72e920f55b28752f979a35cea | Author: Jonathan Ellis <jbellis@apache.org>
 | 2010-05-26 04:45:44+00:00

    add Clock structure as a prelude to full vector clock support.  patch by Sylvain Lebresne and Kelvin Kakugawa for CASSANDRA-1070; reviewed by johano and jbellis
    
    git-svn-id: https://svn.apache.org/repos/asf/cassandra/trunk@948316 13f79535-47bb-0310-9956-ffa450edef68