[KARAF-2078] Create the shell:date command

git-svn-id: https://svn.apache.org/repos/asf/karaf/trunk@1443506 13f79535-47bb-0310-9956-ffa450edef68
[KARAF-2171] Add ServiceMix Specs locator in lib

git-svn-id: https://svn.apache.org/repos/asf/karaf/trunk@1444355 13f79535-47bb-0310-9956-ffa450edef68