ticket:10483: retag latest as 52.1

git-svn-id: http://source.icu-project.org/repos/icu/icu@34938 251d0590-4201-4cf1-90de-194747b24ca1
ticket:10483: retag latest as 52.1

git-svn-id: http://source.icu-project.org/repos/icu/icu@34939 251d0590-4201-4cf1-90de-194747b24ca1
ticket:10650 53m1 BRS task - updates for svn properties

git-svn-id: http://source.icu-project.org/repos/icu/icu@34946 251d0590-4201-4cf1-90de-194747b24ca1