Fix timestamps in Tomcat build and jdbc-pool to use 24-hour format instead of 12-hour one and use UTC timezone.

Merged revisions 1630088,1630094,1630216,1631381 from tomcat/trunk.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/tc7.0.x/trunk@1633092 13f79535-47bb-0310-9956-ffa450edef68