ticket:11139: Add test for C++ createDateFormatForSkeleton

git-svn-id: http://source.icu-project.org/repos/icu/icu@36584 251d0590-4201-4cf1-90de-194747b24ca1
ticket:11303: Create branch.

git-svn-id: http://source.icu-project.org/repos/icu/icu@36585 251d0590-4201-4cf1-90de-194747b24ca1
ticket:11303: Make per unit formatting in MeasureFormat draft API.

git-svn-id: http://source.icu-project.org/repos/icu/icu@36586 251d0590-4201-4cf1-90de-194747b24ca1