Revert "Merge libart and libart-compiler into a single library"

This reverts commit 2b7be1efa1ba363778057d4e42fccab8afe3046b.

Reason for revert: broken build https://android-build.googleplex.com/builds/build-details/9263706/targets/full-eng

Change-Id: I1afd96b314418bc435c029c764fd9e406d2ccefc
16 files changed