Update JNI code in preparation for ICU 59 switching to C++11 char16_t. am: 71cca93f32  -s ours am: 26886917cc  -s ours
am: c8368561b8  -s ours

Change-Id: I2b6b325e870bbdaaf1f7318f81c612c8db4989ee
tree: d7610ec2c825708a56c2b34fa0aa8e372517e421
  1. app/
  2. doc/
  3. include/
  4. libs/
  5. tests/
  6. tools/
  7. Android.bp