Merge "Make archive metadata idempotent" into lmp-dev

            FileOutputStream outstream = new FileOutputStream(manifestFile);

            outstream.write(builder.toString().getBytes());

            outstream.close();

            // We want the manifest block in the archive stream to be idempotent:

            // each time we generate a backup stream for the app, we want the manifest

            // block to be identical.  The underlying tar mechanism sees it as a file,

            // though, and will propagate its mtime, causing the tar header to vary.

            // Avoid this problem by pinning the mtime to zero.

            manifestFile.setLastModified(0);

        }

        // Widget metadata format. All header entries are strings ending in LF:

            }

            bout.flush();

            out.close();

            // As with the manifest file, guarantee idempotence of the archive metadata

            // for the widget block by using a fixed mtime on the transient file.

            destination.setLastModified(0);

        }

        private void tearDown(PackageInfo pkg) {