Make Half look like and behave like a boxed instance

Bug: 35765416
Test: HalfTest
Change-Id: I7ef52428f8b4e2c05b91d7eb37cc4cb5ecc5c6b9
1 file changed
tree: 107b5b6d729dda0f2598dbde9ab31cdedf693f7c
  1. java/