ticket:9904: add enumset to filter, hopefully it will fix the binary build issue


git-svn-id: http://source.icu-project.org/repos/icu/icu@33720 251d0590-4201-4cf1-90de-194747b24ca1
ticket:10051 Mutexes, more platform fixes.

git-svn-id: http://source.icu-project.org/repos/icu/icu@33721 251d0590-4201-4cf1-90de-194747b24ca1