ticket:10952: Create branch.

git-svn-id: http://source.icu-project.org/repos/icu/icu@36633 251d0590-4201-4cf1-90de-194747b24ca1
ticket:10952: Introduce ScientificFormatter class in C++

git-svn-id: http://source.icu-project.org/repos/icu/icu@36635 251d0590-4201-4cf1-90de-194747b24ca1