Get time zone names from CLDR.

Since the intent appears to have been "use the zone's local names if
they're in the same country, and use exemplar locations otherwise",
this patch gets the localized CLDR time zone name or the localized
CLDR exemplar location as appropriate.

Bug: 8145760
Bug: 10179879
Change-Id: Ib3968a493de9f0d3040f3afa6ca07d9f44566a32