ticket:10273 Plural Rule syntax changes, work in progress.

git-svn-id: http://source.icu-project.org/repos/icu/icu/branches/andy@34015 251d0590-4201-4cf1-90de-194747b24ca1
ticket:10184 Create development branch for umutex.h cleanup.


git-svn-id: http://source.icu-project.org/repos/icu/icu/branches/andy@34019 251d0590-4201-4cf1-90de-194747b24ca1