* Begin wiring into system DevicePolicyManager requirements * Semi-real implementations of isSupported() & isActive() * Added new API (placeholder) updatePolicies() * Updated existing unit tests as needed Bug: 2387961
* Add security sync key & signature columns * Add utilities for easy read/write of security columns * Write aggregator for multiple accounts * Simple API's for exchange security (very preliminary) * Unit tests of above Bug: 2387961