ticket:10261: completed tie-in of proposed leniency points

git-svn-id: http://source.icu-project.org/repos/icu/icu4j/branches/srussell@34112 251d0590-4201-4cf1-90de-194747b24ca1
ticket:10261: refactor ability to save off existing leniency setting to support real-time setting of flags

git-svn-id: http://source.icu-project.org/repos/icu/icu4j/branches/srussell@34113 251d0590-4201-4cf1-90de-194747b24ca1