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

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

Change-Id: I626ece4f28a89c85b0553873aed1d946d94605e7