Improve java.nio.Buffer.toString.

Bug: https://code.google.com/p/android/issues/detail?id=53637
Change-Id: I823662b39cb48b5f4456f4c58269324dfcdc2fd1
Remove dead NioUtils.getDirectBufferAddress.

Change-Id: I764d86db1d74c5daf54cc925a9fc76db15a1107a
Fix BufferedReader.readLine to not read ahead after '\r'.

Bug: 8778372
Change-Id: I789d0ff5498cca48b16bb7b3b363014f7b6bcf95
Fix Derp

Change-Id: I6a9f7d8203c91f854fef64c9acd0e0b04459724b
Fix memory leaks in org_apache_harmony_xml_ExpatParser

The method expandInternedStringBucket(...) creates a new bucket
but the old bucket is never freed, even though the function doc
claims that it does. To solve this problem the old bucket is
freed when the new one has been created successfully.

Also this commit fixes two possible memory leaks when a
jniThrowOutOfMemoryError is thrown, where the internedString
also needs to be freed.

Change-Id: Ic80a35a2b4ec8f93ddc006aca5609a5ffe74d659