commit 94deaf7725c418ec1950d810ab86f0d157ddf518
author Philip P. Moltmann <moltmann@google.com> Wed Jul 19 10:06:14 2017 -0700
committer Philip P. Moltmann <moltmann@google.com> Mon Aug 07 10:50:57 2017 -0700
tree 476cf9ae1f932fc5330547401b5947ed2c307e85
parent 27106b97b3db88a2460b582fa61b5acc8c30fdd1

Allow to transfer+seal a install session

... so that one package can supply the data and another one can issue
the commit.

Also allow reading of sealed sessions.

Also lock more in PackageInstallerSession so that we can be sure the
session is not used by the old package anymore once transferred and that
all calls into the session work on consistent data.

Bug: 37281396
Test: cts-tradefed run cts-dev -m CtsContentTestCases --test=android.content.pm.cts.InstallSessionTransferTest
      Installed and uninstalled packages via the PackageInstaller app
      Installed and uninstalled packages via the Google Play Store

Change-Id: Id4b7a0071d703b7d18c9f5bf2bd15ebf67086d07