Switch to use aicu/AIcu.h

Switch to using a dynamically-linked library function to initialize
ICU, not a statically-linked function. This means the knowledge of file
paths stays in the runtime module.

Bug: 120493361
Test: build/boot
Change-Id: I28fc0007f7f0c6fff3aaca599a399f7aae2a86b0
3 files changed