am 426ee7f2: Fixes some bugs in TimeZoneUtils

Merge commit '426ee7f22eeaa016cdbf0addbb7b2cc6b6cc3487' into gingerbread-plus-aosp

* commit '426ee7f22eeaa016cdbf0addbb7b2cc6b6cc3487':
  Fixes some bugs in TimeZoneUtils