Merge "set default journal mode to TRUNCATE, not PERSIST" am: d4a9b5ba am: 77c43245

         Choices are: OFF, DELETE, TRUNCATE, PERSIST and MEMORY.

         PERSIST may improve performance by reducing how often journal blocks are

         reallocated (compared to truncation) resulting in better data block locality

         and less churn of the storage media. -->

    <string name="db_default_journal_mode" translatable="false">PERSIST</string>

         and less churn of the storage media.

         The PERSIST mode results in data persisting in the journal beyond the life of

         a transaction, so it interacts poorly with SECURE_DELETE. -->

    <string name="db_default_journal_mode" translatable="false">TRUNCATE</string>

    <!-- Maximum size of the persistent journal file in bytes.

         If the journal file grows to be larger than this amount then SQLite will