Use prebuilt Runtime (Bionic) APEX and SDK.

Test: `art/build/apex/runtests.sh` on master-art
Test: `m installclean && m build-art-target-golem` on master-art
  Compare file listings of out/target/product/armv8/system/*/* without
  and with the CL topic, and check with readelf that the Bionic libs in
  system/lib(64) aren't stubs.
Test: art/build/run-gtests.sh
  art/test/testrunner/testrunner.py --target --64 --optimizing
  art/tools/run-libcore-tests.sh --mode=device --variant=X64
  art/tools/run-libjdwp-tests.sh --mode=device --variant=X64
    in device chroot on master-art (without Bionic repos), and
    on AOSP master with Bionic sources (no regressions).
Bug: 152255951
Change-Id: I0df9cba6f6d3c41413e2049411c3765cc4e4ea24
3 files changed