ticket:11001 STRING_HASH changed to use uint32_t in computation.

git-svn-id: http://source.icu-project.org/repos/icu/icu@36016 251d0590-4201-4cf1-90de-194747b24ca1
ticket:10998: collation reorder others=Zzzz, recognize only others = reset

git-svn-id: http://source.icu-project.org/repos/icu/icu@36017 251d0590-4201-4cf1-90de-194747b24ca1