ticket:10051 InitOnce, work in progress

git-svn-id: http://source.icu-project.org/repos/icu/icu/branches/andy@33630 251d0590-4201-4cf1-90de-194747b24ca1
ticket:10051 InitOnce, fix Windows build.

git-svn-id: http://source.icu-project.org/repos/icu/icu/branches/andy@33631 251d0590-4201-4cf1-90de-194747b24ca1