Use ICU's CLDR data for "AM" and "PM" strings.

This brings DateUtils and Time in sync with bionic, icu, WebKit,
DateFormatSymbols, Formatter, and SimpleDateFormat. And specifically
means that DateUtils now knows how to say "AM" and "PM" in Japanese.

Bug: 6719054

(cherry-pick of b12b61a88a029730b1f2b006ff914c9c719f3942.)

Conflicts:

	core/res/res/values/public.xml

Change-Id: Ic1a811621a0ec338abd77458ac2046577f87c1e4
74 files changed