Enable media scanner bulk inserts

    private final String mExternalStoragePath;

    // WARNING: Bulk inserts sounded like a great idea and gave us a good performance improvement,

    // but unfortunately it also introduced a number of bugs. All the known bugs were fixed,

    // but we need more testing before enabling.

    private static final boolean ENABLE_BULK_INSERTS = false;

    /** whether to use bulk inserts or individual inserts for each item */

    private static final boolean ENABLE_BULK_INSERTS = true;

    // used when scanning the image database so we know whether we have to prune

    // old thumbnail files