Merge "Support tailoring clang --target flag based on min sdk version." am:...

Merge "Support tailoring clang --target flag based on min sdk version." am: ba4638f5 am: 41b4e249 am: 0db78356

Original change: https://android-review.googlesource.com/c/platform/build/soong/+/2011702

Change-Id: I3567734c306f7f2659a879fc2b2d95e610bca1b9