ticket:8951: Proposed new API signatures.

git-svn-id: http://source.icu-project.org/repos/icu/icu@36232 251d0590-4201-4cf1-90de-194747b24ca1
ticket:10857: Remove mingw suffix and update configure


git-svn-id: http://source.icu-project.org/repos/icu/icu@36233 251d0590-4201-4cf1-90de-194747b24ca1