Update mainline prebuilts to build 8376291.

Taken from branch aosp-master.

CL prepared by prebuilts/runtime/mainline/update.py. See
prebuilts/runtime/mainline/README.md for update instructions.

This update relands the CRT objects reverted in
https://r.android.com/2055896, together with an updated runtime
host-exports, which has the linker binary that must go together with
them.

Test: env TARGET_PRODUCT=armv8 TARGET_BUILD_VARIANT=eng \
        art/test/testrunner/run_build_test_target.py \
        art-linux-bionic-x64
Test: banchan com.android.art && m
Test: art/build/apex/runtests.sh
Bug: 228187970
Change-Id: I4f04b0586dd839cdc8b3a7ae2f5bb4621967b9c1
8 files changed