ticket:11073: Fix the earlier fix for global new[].
Had to move "new UnicodeString[]" into a function ala ticket:2974 to prevent global new[] from being called.
Also, some general cleanup.


git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk@36371 251d0590-4201-4cf1-90de-194747b24ca1
ticket:11032 Spoof check, add validation of data header.

git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk@36372 251d0590-4201-4cf1-90de-194747b24ca1