ticket:10273 New plural rule syntax. Changes merged from development branch. With this checkin, Plural rule data is back in synch between ICU4C, ICU4J and CLDR trunk.

git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk/source@34103 251d0590-4201-4cf1-90de-194747b24ca1
ticket:10168: minor Unicode 6.3 change log updates

git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk/source@34106 251d0590-4201-4cf1-90de-194747b24ca1