ticket:9077: RBBI test enhancements.

git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk@33232 251d0590-4201-4cf1-90de-194747b24ca1
ticket:9077: Enhancements to break iteration tests.

git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk@33233 251d0590-4201-4cf1-90de-194747b24ca1
ticket:9077: Fix failing test rbbi/RBBITest/TestExtended

git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk@33234 251d0590-4201-4cf1-90de-194747b24ca1
ticket:9880: add ImmutableIndex, replace Chinese hacks and support zhuyin, handle index characters with multiple primary weights, lazy-create rarely-used objects, bug fixes, port other improvements from Java

git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk@33245 251d0590-4201-4cf1-90de-194747b24ca1