ticket:9721: Merge r33412 from #10013 and r33413


git-svn-id: http://source.icu-project.org/repos/icu/icu/branches/maint/maint-51@33415 251d0590-4201-4cf1-90de-194747b24ca1
ticket:10013: Update tzdata to 2013b and fix tzcode tool in maint-51


git-svn-id: http://source.icu-project.org/repos/icu/icu/branches/maint/maint-51@33422 251d0590-4201-4cf1-90de-194747b24ca1