BreakIterator offset check modified.

This may be related to http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4177479

An offset equal to the length of the text (cursor located AFTER the last character)
is a valid CharIterator index per the specifications.

Renamed OldBreakIterator and added tests to exercise the changes.
Same behavior as the Reference Implementation.

Change-Id: I7e339bcff0049bde7d04b750c72d45e3f4393186
3 files changed