ticket:10884: Apply API proposal from 11 Jun ICU meeting.

git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk@35861 251d0590-4201-4cf1-90de-194747b24ca1
ticket:10884: Applied review comments from Andy Heninger.

git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk@35862 251d0590-4201-4cf1-90de-194747b24ca1
ticket:10884: Attempt to fix broken build.

git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk@35870 251d0590-4201-4cf1-90de-194747b24ca1
ticket:10884: Fix compile warnings around not initializing base class in copy constructor for RelativeDateTimeFormatter and SharedObject.

git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk@35871 251d0590-4201-4cf1-90de-194747b24ca1
ticket:10344 add new field & factory method for currency CASH/STANDARD Usage

git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk@35873 251d0590-4201-4cf1-90de-194747b24ca1