Merge from Widevine repo of http://go/wvgerrit/125263 and http://go/wvgerrit/135749 Define a |major.minor| version in the serialization layer and check for compatibility between REE and TEE before accepting connections. bug: 158857733 test: opk_all_tests Change-Id: Iad44a1f50a27c6bca4959c6d41c9b361712dbde8