Merge "API and boot image updates to import RI BigInteger" am: 47ce951f33 am: 2996c1be22 am: 7949fea1f9 am: 6b9c4df784 am: c8a5932211

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1331800

Change-Id: If397cb25e2b480a421218d8b04438fce3c3224d6