Log APK hash for package install attempts in the Event Log.

This CL adds a package_digest field to the install_package_attempt
event. The field is populated with the SHA-256 digest of the contents
of the APK iff the user has consented to app verification and app
verification is enabled.

Bug: 11275004
Bug: 10605940

(cherry picked from commit 8fca480bee00578c1529b1f32ab30af096db82dd)

Change-Id: I9773925f7e397ada26efac022349dc8e4af01208
Import translations. DO NOT MERGE

Change-Id: I304ee40cd39348cc847e6fd69a50300e612dfa51
Auto-generated-cl: translation import
Import translations. DO NOT MERGE

Change-Id: I020d2c5e2c66ea260e6c6ee665425124c3d579b0
Auto-generated-cl: translation import
Merge tag 'android-4.4.1_r1' into HEAD

Android 4.4.1 Release 1
Import translations. DO NOT MERGE

Change-Id: I2951f31915295770db28861ea4089c26af43d00d
Auto-generated-cl: translation import
Import translations. DO NOT MERGE

Change-Id: Ib9667aeb6e8c702ae831e16ee1e4e8e935dd3749
Auto-generated-cl: translation import
PackageInstaller: AST translations

Change-Id: I6323b325e4e708980035c40fac15e8d5f4e03a39
Automatic translation import

Change-Id: I45eeb91f07cb8bf1812afc8903cb429755f3e76c
Merge tag 'android-4.4.3_r1' into HEAD

Android 4.4.3 release 1
Automatic translation import

Change-Id: I85292dc30a84d935c25654641bc17f1ed62ba178
Automatic translation import

Change-Id: Iac123891f5ce8333a72587c5debfb725219b8f7a
Automatic translation import

Change-Id: Ife529b731340488e52a9143605b144027b415f33
Automatic translation import

Change-Id: I1df8ba8e0a41da4812318b55c68610945998c469
Automatic translation import

Change-Id: I9616b073333bbdc3b58d1b45fb136ca844cd70ac