Merge branch 'master' into honeycomb-release

* master:
  Test that HttpURLConnection responds gracefully when the server closes a socket.
  Use ftruncate64.
  Fix File.length for sparse files.
  Fix the XML declaration message to work with JUnit 3.8.1 or JUnit 4.
  Don't be specific about exception priority in OldFileChannelTest.
  More math tests that fail on the host only.
  Don't test for implementation details in OldRandomAccessFileTest.
  HttpsURLConnection retry should not invoke X509TrustManager and HostnameVerifier more than once
  Don't bother trying to unzip a file named "*.dex".
  MappedByteBuffer get(byte[]) and get(byte[], int, int) weren't updating 'position'.