ACCUMULO-1059 applying Supun Kamburugamuva's patch to use 24-hour time

git-svn-id: https://svn.apache.org/repos/asf/accumulo/branches/1.5@1468959 13f79535-47bb-0310-9956-ffa450edef68
ACCUMULO-1059 applying Supun Kamburugamuva's patch to use 24-hour time

git-svn-id: https://svn.apache.org/repos/asf/accumulo/trunk@1468961 13f79535-47bb-0310-9956-ffa450edef68