ticket:10792: Merge data fixes from Cldrbug:7068

git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk@35473 251d0590-4201-4cf1-90de-194747b24ca1
ticket:10740: Adjust #ifndef U_HIDE_DRAFT/INTERNAL_API for changes; don't use around default,copy,= ctors

git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk@35478 251d0590-4201-4cf1-90de-194747b24ca1